# system.util.jsonEncode output not the same in webdev module

**URL:** <https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887>\
**Category:** Ignition\
**Tags:** ignition83\
**Created:** [September 23, 2025, 12:29pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887 "2025-09-23T12:29:49Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [September 23, 2025, 12:29pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/1 "2025-09-23T12:29:50Z")

</div>

After upgrading to ignition 8.3, something broke with the system.util.jsonEncode function.

If the call is made from the webdev module, some key-value pair will changes to dictionaries?

**system.util.jsonEncode called from WebDev:**

 ![jsonEncode-webDev](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/a/0a929bea527083b4358e297b373c3144c304149a.png)

**system.util.jsonEncode called from project script or message handler:**

Webdev in 8.1 would generate the same output. _(the desired output)_

 ![jsonEncode-ProjectScript](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/8/e8451c1c738b41b35cc88c913e113d5f6baf3ac2.png)

Am I missing something?

Thanks

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [September 23, 2025, 12:32pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/2 "2025-09-23T12:32:29Z")

</div>

What is the object you are encoding? Can you add some debug logging e.g. `print type(value)` before passing `value` to `system.util.jsonEncode`?

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<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [September 23, 2025, 12:38pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/3 "2025-09-23T12:38:58Z")

</div>

Sure can,

Type is dict:

![Screenshot 2025-09-23 083441](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/f/bf14f2135774435ff398428ef3552c86a7684013.png)

here the code in webdev:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/0/80727ecb3879d2aedd32cc05b78cc03a416dcaa7.png)

the output : is a key that contains an array.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/8/a8875b86476aabefcbeafc918252b7eddd486093.png)

each item in the array:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/a/fa084f894eb759dce480ef15738ec76b60a440bd.png)

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [September 23, 2025, 12:40pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/4 "2025-09-23T12:40:14Z")

</div>

What's the type of the thing in a message handler? What are the contents of the dict? Can you compare them?

The behavior of jsonEncode doesn't change based on where you call it from. The only difference here can be that you are passing slightly different objects to it somehow.

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<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [September 23, 2025, 12:42pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/5 "2025-09-23T12:42:42Z")

</div>

the sendRequest sends back a list

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<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [September 23, 2025, 12:45pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/6 "2025-09-23T12:45:52Z")

</div>

this is the message handler:

the commented line, that what it was before I change to 8.3 to get my result.

now if I encode here, no problem.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/f/cf5dc8ab81e2ff03ab3e2e5bdd0383c864c1d91f.png)

modified webdev part, this gives me what 8.1 did.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/f/bfffa1b2493be3f865a7435390b3ce981b7f72cb.png)

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [September 23, 2025, 12:53pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/7 "2025-09-23T12:53:34Z")

</div>

What kinds of things are in the `res` list?

It seems that whatever they are, they might not be getting serialized/deserialized when returned by `sendRequest` the same was as in 8.1, or may be entirely different now.

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<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [September 23, 2025, 1:15pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/9 "2025-09-23T13:15:21Z")

</div>

replicated in simple projects

[test\_remoteGtw.zip](https://forum.inductiveautomation.com/uploads/short-url/weQsFkTxkgpPAEwU0q1xTOogTH2.zip) (3.1 KB)

[test\_caller.zip](https://forum.inductiveautomation.com/uploads/short-url/3PAB7pNhDEcWx9m9W2GmbVSFiAT.zip) (4.7 KB)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/c/5c55730b887bcf5abdbe906a2baea66d03322db1.png)

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [September 23, 2025, 1:23pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/10 "2025-09-23T13:23:12Z")

</div>

@paul-griffith do you recognize that dataType/value pair? Is this maybe some protobuf RPC thing?

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<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [September 23, 2025, 1:56pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/11 "2025-09-23T13:56:26Z")

</div>

remark: I did change from java serialization to protobuf in gateway settings.

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<div class="post-metadata">

**Author:** ![mgross](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mgross/32/3311_2.png) [@mgross](https://forum.inductiveautomation.com/u/mgross)\
**Post date:** [September 23, 2025, 4:12pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/12 "2025-09-23T16:12:23Z")

</div>

On the gateway that handles the message, can you set this logger to TRACE:

```python
metro.serializers.ServerMessageSerializer

```

Then run your test again and post the logger entry? It would help to see the response data just before it is Protobuf serialized.

---

<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [September 23, 2025, 4:57pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/13 "2025-09-23T16:57:01Z")

</div>

```python
Protobuf message header='[intent=_rpc:516692, iversion=0, codec=_js_, headers={{_headerid_=dfcf0ea3-951e-435e-b87b-896d0cbd6dd0, _source_=_0:0:Ignition-VMAPPP043, _ver_=2}}]', body='{ "@type": "type.googleapis.com/gateway.protobuf.SendRequestResultPB", "opId": { }, "pyResult": { "pyAsJson": { "pyClass": "org.python.core.PyList", "json": [{ "eventId": { "value": "1", "dataType": "java.lang.Integer" }, "recipes": [{ "eventId": { "value": "1", "dataType": "java.lang.Integer" }, "endDate": "2024-10-16 08:00:00.0", "recipe": "EPINETTE 2x3x8", "startDate": "2024-10-16 00:00:00.0" }], "counters": { "bundleOut": { "value": "64", "dataType": "java.lang.Integer" }, "sorterPieceCount": { "value": "36201", "dataType": "java.lang.Long" }, "bundleIn": { "value": "87", "dataType": "java.lang.Integer" }, "sorterPmp": 144120.0 }, "endDate": "2024-10-16 08:00:00", "oee": { "D": { "value": "0", "dataType": "java.lang.Integer" }, "OEE": { "value": "0", "dataType": "java.lang.Integer" }, "P": { "value": "0", "dataType": "java.lang.Integer" }, "Q": { "value": "0", "dataType": "java.lang.Integer" } }, "products": [{ "gradeName": "ECHAF", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1537", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "315", "dataType": "java.lang.Long" }, "pmp": 1260.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 ECHAF", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "37", "dataType": "java.lang.Long" } }, { "gradeName": "HT #4", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "7", "dataType": "java.lang.Integer" }, "code": { "value": "98", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "84000", "dataType": "java.lang.Long" }, "count": { "value": "586", "dataType": "java.lang.Long" }, "pmp": 2051.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x84 No4", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "5", "dataType": "java.lang.Long" } }, { "gradeName": "STUD HT", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "133", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "3380", "dataType": "java.lang.Long" }, "pmp": 13520.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 Stud", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "4", "dataType": "java.lang.Long" } }, { "gradeName": "NI 20", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1318", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "101000", "dataType": "java.lang.Long" }, "count": { "value": "1499", "dataType": "java.lang.Long" }, "pmp": 5996.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x101 NI20", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "13", "dataType": "java.lang.Long" } }, { "gradeName": "HT #4", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "135", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "3465", "dataType": "java.lang.Long" }, "pmp": 13860.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 No4", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "5", "dataType": "java.lang.Long" } }, { "gradeName": "No2 HT", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "169", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "35", "dataType": "java.lang.Long" }, "pmp": 140.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 No2", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "2", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 1950", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "7", "dataType": "java.lang.Integer" }, "code": { "value": "1194", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "90000", "dataType": "java.lang.Long" }, "count": { "value": "334", "dataType": "java.lang.Long" }, "pmp": 1169.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x90 MSR1950", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "6", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 1950", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1163", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "101000", "dataType": "java.lang.Long" }, "count": { "value": "11669", "dataType": "java.lang.Long" }, "pmp": 46676.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x101 MSR1950", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "6", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 2100", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1165", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "101000", "dataType": "java.lang.Long" }, "count": { "value": "4246", "dataType": "java.lang.Long" }, "pmp": 16984.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x101 MSR2100", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "8", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 2400", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "496", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "7584", "dataType": "java.lang.Long" }, "pmp": 30336.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 MSR2400", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "9", "dataType": "java.lang.Long" } }, { "gradeName": "GRECON", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1168", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "101000", "dataType": "java.lang.Long" }, "count": { "value": "3032", "dataType": "java.lang.Long" }, "pmp": 12128.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x101 Grecon", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "12", "dataType": "java.lang.Long" } }, { "code": { "value": "589", "dataType": "java.lang.Integer" }, "count": { "value": "56", "dataType": "java.lang.Long" }, "name": "NG/S" }], "bundles": [{ "productName": "2x3x96 Stud", "pieceCount": { "value": "532", "dataType": "java.lang.Long" }, "productCode": { "value": "133", "dataType": "java.lang.Long" }, "countFull": { "value": "5", "dataType": "java.lang.Integer" } }, { "productName": "2x3x101 NI20", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1318", "dataType": "java.lang.Long" }, "countFull": { "value": "2", "dataType": "java.lang.Integer" } }, { "productName": "2x3x96 No4", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "135", "dataType": "java.lang.Long" }, "countFull": { "value": "5", "dataType": "java.lang.Integer" } }, { "productName": "2x3x101 MSR1950", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1163", "dataType": "java.lang.Long" }, "countFull": { "value": "23", "dataType": "java.lang.Integer" } }, { "productName": "2x3x101 MSR2100", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1165", "dataType": "java.lang.Long" }, "countFull": { "value": "7", "dataType": "java.lang.Integer" } }, { "productName": "2x3x96 MSR2400", "pieceCount": { "value": "437", "dataType": "java.lang.Long" }, "productCode": { "value": "496", "dataType": "java.lang.Long" }, "countFull": { "value": "17", "dataType": "java.lang.Integer" } }, { "productName": "2x3x101 Grecon", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1168", "dataType": "java.lang.Long" }, "countFull": { "value": "5", "dataType": "java.lang.Integer" } }], "runTime": { "value": "28800", "dataType": "java.lang.Integer" }, "startDate": "2024-10-16 00:00:00", "energy": { "powerPeakDemand": { "value": "0", "dataType": "java.lang.Integer" }, "kWh": { "value": "0", "dataType": "java.lang.Integer" } } }, { "eventId": { "value": "2", "dataType": "java.lang.Integer" }, "recipes": [{ "eventId": { "value": "1", "dataType": "java.lang.Integer" }, "endDate": "2024-10-16 11:04:57.298", "recipe": "EPINETTE 2x3x8", "startDate": "2024-10-16 08:00:00.0" }, { "eventId": { "value": "2", "dataType": "java.lang.Integer" }, "endDate": "2024-10-16 16:00:00.0", "recipe": "EPINETTE 2x3x9", "startDate": "2024-10-16 11:04:57.298" }], "counters": { "bundleOut": { "value": "136", "dataType": "java.lang.Integer" }, "sorterPieceCount": { "value": "71821", "dataType": "java.lang.Long" }, "bundleIn": { "value": "175", "dataType": "java.lang.Integer" }, "sorterPmp": 303157.5 }, "endDate": "2024-10-16 16:00:00", "oee": { "D": { "value": "0", "dataType": "java.lang.Integer" }, "OEE": { "value": "0", "dataType": "java.lang.Integer" }, "P": { "value": "0", "dataType": "java.lang.Integer" }, "Q": { "value": "0", "dataType": "java.lang.Integer" } }, "products": [{ "gradeName": "ECHAF", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1537", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "452", "dataType": "java.lang.Long" }, "pmp": 1808.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 ECHAF", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "37", "dataType": "java.lang.Long" } }, { "gradeName": "HT #4", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "7", "dataType": "java.lang.Integer" }, "code": { "value": "98", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "84000", "dataType": "java.lang.Long" }, "count": { "value": "186", "dataType": "java.lang.Long" }, "pmp": 651.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x84 No4", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "5", "dataType": "java.lang.Long" } }, { "gradeName": "GRECON", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "9", "dataType": "java.lang.Integer" }, "code": { "value": "1154", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "112000", "dataType": "java.lang.Long" }, "count": { "value": "415", "dataType": "java.lang.Long" }, "pmp": 1867.5, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x112 Grecon", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "12", "dataType": "java.lang.Long" } }, { "gradeName": "ECHAF", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "9", "dataType": "java.lang.Integer" }, "code": { "value": "1539", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "107000", "dataType": "java.lang.Long" }, "count": { "value": "290", "dataType": "java.lang.Long" }, "pmp": 1305.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x107 ECHAF", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "37", "dataType": "java.lang.Long" } }, { "gradeName": "NI 20", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "9", "dataType": "java.lang.Integer" }, "code": { "value": "1316", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "112000", "dataType": "java.lang.Long" }, "count": { "value": "2039", "dataType": "java.lang.Long" }, "pmp": 9175.5, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x112 NI20", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "13", "dataType": "java.lang.Long" } }, { "gradeName": "STUD HT", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "133", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "7819", "dataType": "java.lang.Long" }, "pmp": 31276.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 Stud", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "4", "dataType": "java.lang.Long" } }, { "gradeName": "NI 20", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1318", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "101000", "dataType": "java.lang.Long" }, "count": { "value": "1402", "dataType": "java.lang.Long" }, "pmp": 5608.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x101 NI20", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "13", "dataType": "java.lang.Long" } }, { "gradeName": "HT #4", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "135", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "3219", "dataType": "java.lang.Long" }, "pmp": 12876.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 No4", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "5", "dataType": "java.lang.Long" } }, { "gradeName": "No2 HT", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "169", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "216", "dataType": "java.lang.Long" }, "pmp": 864.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 No2", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "2", "dataType": "java.lang.Long" } }, { "gradeName": "No3 HT", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1674", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "2290", "dataType": "java.lang.Long" }, "pmp": 9160.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 No3", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "135", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 1950", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "7", "dataType": "java.lang.Integer" }, "code": { "value": "1194", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "90000", "dataType": "java.lang.Long" }, "count": { "value": "212", "dataType": "java.lang.Long" }, "pmp": 742.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x90 MSR1950", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "6", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 1950", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1163", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "101000", "dataType": "java.lang.Long" }, "count": { "value": "11237", "dataType": "java.lang.Long" }, "pmp": 44948.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x101 MSR1950", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "6", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 2100", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1165", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "101000", "dataType": "java.lang.Long" }, "count": { "value": "2773", "dataType": "java.lang.Long" }, "pmp": 11092.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x101 MSR2100", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "8", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 2400", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "496", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "96000", "dataType": "java.lang.Long" }, "count": { "value": "6481", "dataType": "java.lang.Long" }, "pmp": 25924.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x96 MSR2400", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "9", "dataType": "java.lang.Long" } }, { "gradeName": "GRECON", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "8", "dataType": "java.lang.Integer" }, "code": { "value": "1168", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "101000", "dataType": "java.lang.Long" }, "count": { "value": "1913", "dataType": "java.lang.Long" }, "pmp": 7652.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x101 Grecon", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "12", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 2400", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "9", "dataType": "java.lang.Integer" }, "code": { "value": "500", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "109000", "dataType": "java.lang.Long" }, "count": { "value": "4302", "dataType": "java.lang.Long" }, "pmp": 19359.0, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x107 MSR2400", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "9", "dataType": "java.lang.Long" } }, { "gradeName": "GRECON", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "9", "dataType": "java.lang.Integer" }, "code": { "value": "60", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "107000", "dataType": "java.lang.Long" }, "count": { "value": "2421", "dataType": "java.lang.Long" }, "pmp": 10894.5, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x107 Grecon", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "12", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 1950", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "9", "dataType": "java.lang.Integer" }, "code": { "value": "1149", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "112000", "dataType": "java.lang.Long" }, "count": { "value": "17919", "dataType": "java.lang.Long" }, "pmp": 80635.5, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x112 MSR1950", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "6", "dataType": "java.lang.Long" } }, { "gradeName": "MSR 2100", "nominalThickness": { "value": "2", "dataType": "java.lang.Integer" }, "nominalLength": { "value": "9", "dataType": "java.lang.Integer" }, "code": { "value": "1151", "dataType": "java.lang.Long" }, "thickness": { "value": "1500", "dataType": "java.lang.Long" }, "length": { "value": "112000", "dataType": "java.lang.Long" }, "count": { "value": "6071", "dataType": "java.lang.Long" }, "pmp": 27319.5, "nominalWidth": { "value": "3", "dataType": "java.lang.Integer" }, "name": "2x3x112 MSR2100", "width": { "value": "2500", "dataType": "java.lang.Long" }, "gradeCode": { "value": "8", "dataType": "java.lang.Long" } }, { "code": { "value": "589", "dataType": "java.lang.Integer" }, "count": { "value": "164", "dataType": "java.lang.Long" }, "name": "NG/S" }], "bundles": [{ "productName": "2x3x96 ECHAF", "pieceCount": { "value": "437", "dataType": "java.lang.Long" }, "productCode": { "value": "1537", "dataType": "java.lang.Long" }, "countFull": { "value": "1", "dataType": "java.lang.Integer" } }, { "productName": "2x3x84 No4", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "98", "dataType": "java.lang.Long" }, "countFull": { "value": "1", "dataType": "java.lang.Integer" } }, { "productName": "2x3x112 NI20", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1316", "dataType": "java.lang.Long" }, "countFull": { "value": "3", "dataType": "java.lang.Integer" } }, { "productName": "2x3x96 Stud", "pieceCount": { "value": "532", "dataType": "java.lang.Long" }, "productCode": { "value": "133", "dataType": "java.lang.Long" }, "countFull": { "value": "14", "dataType": "java.lang.Integer" } }, { "productName": "2x3x101 NI20", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1318", "dataType": "java.lang.Long" }, "countFull": { "value": "3", "dataType": "java.lang.Integer" } }, { "productName": "2x3x96 No4", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "135", "dataType": "java.lang.Long" }, "countFull": { "value": "6", "dataType": "java.lang.Integer" } }, { "productName": "2x3x90 MSR1950", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1194", "dataType": "java.lang.Long" }, "countFull": { "value": "1", "dataType": "java.lang.Integer" } }, { "productName": "2x3x96 No3", "pieceCount": { "value": "532", "dataType": "java.lang.Long" }, "productCode": { "value": "1674", "dataType": "java.lang.Long" }, "countFull": { "value": "4", "dataType": "java.lang.Integer" } }, { "productName": "2x3x101 MSR1950", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1163", "dataType": "java.lang.Long" }, "countFull": { "value": "21", "dataType": "java.lang.Integer" } }, { "productName": "2x3x101 MSR2100", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1165", "dataType": "java.lang.Long" }, "countFull": { "value": "5", "dataType": "java.lang.Integer" } }, { "productName": "2x3x96 MSR2400", "pieceCount": { "value": "437", "dataType": "java.lang.Long" }, "productCode": { "value": "496", "dataType": "java.lang.Long" }, "countFull": { "value": "14", "dataType": "java.lang.Integer" } }, { "productName": "2x3x101 Grecon", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1168", "dataType": "java.lang.Long" }, "countFull": { "value": "3", "dataType": "java.lang.Integer" } }, { "productName": "2x3x107 MSR2400", "pieceCount": { "value": "437", "dataType": "java.lang.Long" }, "productCode": { "value": "500", "dataType": "java.lang.Long" }, "countFull": { "value": "10", "dataType": "java.lang.Integer" } }, { "productName": "2x3x107 Grecon", "pieceCount": { "value": "437", "dataType": "java.lang.Long" }, "productCode": { "value": "60", "dataType": "java.lang.Long" }, "countFull": { "value": "5", "dataType": "java.lang.Integer" } }, { "productName": "2x3x112 MSR1950", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1149", "dataType": "java.lang.Long" }, "countFull": { "value": "34", "dataType": "java.lang.Integer" } }, { "productName": "2x3x112 MSR2100", "pieceCount": { "value": "513", "dataType": "java.lang.Long" }, "productCode": { "value": "1151", "dataType": "java.lang.Long" }, "countFull": { "value": "11", "dataType": "java.lang.Integer" } }], "runTime": { "value": "16616", "dataType": "java.lang.Integer" }, "startDate": "2024-10-16 08:00:00", "energy": { "powerPeakDemand": { "value": "0", "dataType": "java.lang.Integer" }, "kWh": { "value": "0", "dataType": "java.lang.Integer" } } }] } } }'

```

maybe it would be esaier to use the test project I have uploaded in this thread (see up)

---

<div class="post-metadata">

**Author:** ![mgross](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mgross/32/3311_2.png) [@mgross](https://forum.inductiveautomation.com/u/mgross)\
**Post date:** [September 23, 2025, 6:22pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/14 "2025-09-23T18:22:29Z")

</div>

Ok we figured it out. It’s because the values are in a list, which is triggering a bug in one of the deserializers. I put in a ticket to get this fixed ASAP. Thanks for the simplified examples, they made this much easier to replicate.

---

<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [October 31, 2025, 1:09pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/15 "2025-10-31T13:09:23Z")

</div>

Hi,

Version 8.3.1 fixed all the above but there is still something happening in the script console.

For example:

Webdev module, call a fonction on another gateway. Works fine, I get a result.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/3/d3614431644b4afb2c9f7f36a3d5fc6d1514b25b.png)

I have a script that call the same fonction, same parameters (for my example):

At the end, this sends a email

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/2/72494abc784ed53aa76229fb36409cd1ecad633b.png)

this gets call by a Scheduled script:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/9/09a0cddbf632b23246029565eb14be3829828443.png)

I do get my email, all si fine.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/6/f687fa82f1ccbef2e4e4f4189db0a2a67e00b280.png)

but if I call the same fonction in a script console (for debug purpose for example) and :

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/3/a/3a2ef9ed2541f41fed900aec7a2372ab749b1adc.png)

```python
Java Traceback:
Traceback (most recent call last):
File "", line 1, in 
File "<module:AB2.PL03>", line 8, in csvProdRecipeDetails
at java.base/java.util.concurrent.CompletableFuture.reportGet(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture.get(Unknown Source)
at com.inductiveautomation.ignition.common.script.builtin.SystemUtilities.sendRequest(SystemUtilities.java:827)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.inductiveautomation.ignition.common.rpc.proto.ProtoSerializationException: Unable to deserialize java.math.BigInteger; no deserializer found
at org.python.core.Py.JavaError(Py.java:545)
at org.python.core.Py.JavaError(Py.java:536)
at org.python.core.PyReflectedFunction. __call__ (PyReflectedFunction.java:192)
at com.inductiveautomation.ignition.common.script.ScriptManager$ReflectedInstanceFunction. __call__ (ScriptManager.java:563)
at org.python.core.PyObject. __call__ (PyObject.java:400)
at org.python.pycode._pyx164.csvProdRecipeDetails$1(<module:AB2.PL03>:73)
at org.python.pycode._pyx164.call_function(<module:AB2.PL03>)
at org.python.core.PyTableCode.call(PyTableCode.java:173)
at org.python.core.PyBaseCode.call(PyBaseCode.java:119)
at org.python.core.PyFunction. __call__ (PyFunction.java:406)
at org.python.pycode._pyx163.f$0(<input>:1)
at org.python.pycode._pyx163.call_function(<input>)
at org.python.core.PyTableCode.call(PyTableCode.java:173)
at org.python.core.PyCode.call(PyCode.java:18)
at org.python.core.Py.runCode(Py.java:1703)
at org.python.core.Py.exec(Py.java:1747)
at org.python.util.PythonInterpreter.exec(PythonInterpreter.java:277)
at org.python.util.InteractiveInterpreter.runcode(InteractiveInterpreter.java:130)
at com.inductiveautomation.ignition.designer.gui.tools.jythonconsole.JythonConsole$ConsoleWorker.doInBackground(JythonConsole.java:628)
at com.inductiveautomation.ignition.designer.gui.tools.jythonconsole.JythonConsole$ConsoleWorker.doInBackground(JythonConsole.java:616)
at java.desktop/javax.swing.SwingWorker$1.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.desktop/javax.swing.SwingWorker.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.util.concurrent.ExecutionException: com.inductiveautomation.ignition.common.rpc.proto.ProtoSerializationException: Unable to deserialize java.math.BigInteger; no deserializer found
at java.base/java.util.concurrent.CompletableFuture.reportGet(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture.get(Unknown Source)
at com.inductiveautomation.ignition.common.script.builtin.SystemUtilities.sendRequest(SystemUtilities.java:827)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.python.core.PyReflectedFunction. __call__ (PyReflectedFunction.java:190)
... 23 more
Caused by: com.inductiveautomation.ignition.common.rpc.proto.ProtoSerializationException: Unable to deserialize java.math.BigInteger; no deserializer found
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters.fallbackDeserializer(BuiltinAdapters.java:413)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:246)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:234)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.protoDecode(ProtoRpcSerializer.java:348)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$8.decode(BuiltinAdapters.java:230)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$8.decode(BuiltinAdapters.java:215)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:246)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:234)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.protoDecode(ProtoRpcSerializer.java:348)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$10.decode(BuiltinAdapters.java:277)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$10.decode(BuiltinAdapters.java:259)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:246)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:234)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.protoDecode(ProtoRpcSerializer.java:348)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$8.decode(BuiltinAdapters.java:230)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$8.decode(BuiltinAdapters.java:215)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:246)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:234)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.protoDecode(ProtoRpcSerializer.java:348)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$10.decode(BuiltinAdapters.java:277)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$10.decode(BuiltinAdapters.java:259)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:246)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:234)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.protoDecode(ProtoRpcSerializer.java:348)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$8.decode(BuiltinAdapters.java:230)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters$8.decode(BuiltinAdapters.java:215)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:246)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeValue(ProtoRpcSerializer.java:234)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.decodeRpcMessage(ProtoRpcSerializer.java:220)
at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.readReturnValue(ProtoRpcSerializer.java:387)
at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.invoke(GatewayInterface.java:347)
at com.inductiveautomation.ignition.client.gateway_interface.GatewayConnection$Rpc$RpcInvocationHandler.invoke(GatewayConnection.java:335)
at jdk.proxy2/jdk.proxy2.$Proxy20.dispatchRequest(Unknown Source)
at com.inductiveautomation.ignition.client.script.DesignerSystemUtilities.lambda$sendRequestInternal$7(DesignerSystemUtilities.java:276)
at com.inductiveautomation.ignition.client.util.gui.progress.Task.lambda$create$1(Task.java:87)
at com.inductiveautomation.ignition.client.util.gui.progress.Task$FunctionWrapper.apply(Task.java:247)
at com.inductiveautomation.ignition.client.util.gui.progress.Task$FunctionWrapper.apply(Task.java:237)
at com.inductiveautomation.ignition.client.util.gui.progress.Task.lambda$runInternal$3(Task.java:205)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
... 3 more
Caused by: com.inductiveautomation.ignition.common.gson.JsonSyntaxException: Failed parsing '44133.0' as BigInteger; at path $
at com.inductiveautomation.ignition.common.gson.internal.bind.TypeAdapters$17.read(TypeAdapters.java:458)
at com.inductiveautomation.ignition.common.gson.internal.bind.TypeAdapters$17.read(TypeAdapters.java:448)
at com.inductiveautomation.ignition.common.gson.Gson.fromJson(Gson.java:1227)
at com.inductiveautomation.ignition.common.gson.Gson.fromJson(Gson.java:1329)
at com.inductiveautomation.ignition.common.gson.Gson.fromJson(Gson.java:1271)
at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters.fallbackDeserializer(BuiltinAdapters.java:410)
... 42 more
Caused by: java.lang.NumberFormatException: For input string: "44133.0"
at java.base/java.lang.NumberFormatException.forInputString(Unknown Source)
at java.base/java.lang.Integer.parseInt(Unknown Source)
at java.base/java.math.BigInteger.<init>(Unknown Source)
at java.base/java.math.BigInteger.<init>(Unknown Source)
at com.inductiveautomation.ignition.common.gson.internal.bind.TypeAdapters$17.read(TypeAdapters.java:456)
... 47 more
Traceback (most recent call last):
File "", line 1, in 
File "<module:AB2.PL03>", line 8, in csvProdRecipeDetails
at java.base/java.util.concurrent.CompletableFuture.reportGet(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture.get(Unknown Source)
at com.inductiveautomation.ignition.common.script.builtin.SystemUtilities.sendRequest(SystemUtilities.java:827)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.inductiveautomation.ignition.common.rpc.proto.ProtoSerializationException: Unable to deserialize java.math.BigInteger; no deserializer found

```

---

<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [October 31, 2025, 2:02pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/16 "2025-10-31T14:02:24Z")

</div>

The script console is not gateway scope. Anything in your script that requires gateway scope will break.

You simply cannot debug such code from the designer script console. Sorry.

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [October 31, 2025, 4:00pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/17 "2025-10-31T16:00:34Z")

</div>

> [@Jean-Maurice\_Dubois](#):
>
> `Caused by: com.inductiveautomation.ignition.common.gson.JsonSyntaxException: Failed parsing '44133.0' as BigInteger; at path $`

Interesting. You're using `sendRequest` - can you share the rest of your code or at least the portion where you assemble a value to `return` from the function you're calling?

> [@pturmel](#):
>
> The script console is not gateway scope. Anything in your script that requires gateway scope will break.

While this is true, I don't think it's relevant here. They're apparently implicitly calling `sendRequest` in this library function, and that's the call that's failing.

---

<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [October 31, 2025, 4:33pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/18 "2025-10-31T16:33:17Z")

</div>

Sure.

Message handler:

![image](https://us1.discourse-cdn.com/inductiveautomation/optimized/3X/9/c/9c9459b1808396f31f4f03788fc50a645d9d4bfb_2_690x61.png)

Function:

> def getDetails(startDate, endDate):
> 
> ```python
> output = []
> lstRecipe = AB2.PL03.Recipe.listBetween(startDate, endDate)
> 
> for i in range(len(lstRecipe)):
> 	
> bundles = AB2.PL03.Sorter.getProdOutput_Bundle(system.date.parse(lstRecipe[i]['startDate']), system.date.parse(lstRecipe[i]['endDate']))
> products = AB2.PL03.Sorter.getProdOutput_McxPMP(system.date.parse(lstRecipe[i]['startDate']), system.date.parse(lstRecipe[i]['endDate']))
> 
> objCnt = {}
> objCnt['bundleIn'] = util.historian.counters.std("[CHIBOUGAMAU]CCL/CHIBOUGAMAU/AB2/PLANEUR/DECANTEUR-01/EDGE/Pqt_OK_Decanteur", \
> lstRecipe[i]['startDate'], lstRecipe[i]['endDate'])
> 	
> objCnt['bundleOut'] = bundles['bundleOut']
> objCnt['sorterPieceCount'] = products['sorterPieceCount']
> lstRecipe[i]['counters'] = objCnt
> 
> objCalcTime = {}
> objCalcTime['Recipe.getProdOutput_Bundle'] = bundles['calcTime']
> objCalcTime['Recipe.getProdOutput_McxPMP'] = products['calcTime']
> lstRecipe[i]['calcTimes'] = objCalcTime
> 	
> lstRecipe[i]['bundles'] = bundles['bundles']
> lstRecipe[i]['products'] = products['products']
> 	
> lstRecipe[i]['energy'] = {"powerPeakDemand":0, "kWh" : 0}
> lstRecipe[i]['oee'] = {"D" : 0, "P": 0, "Q": 0, "OEE": 0}
> 	
> output.append(lstRecipe[i])
> 
> return output
> 
> ```

Here is a response sample:

[response.json](https://forum.inductiveautomation.com/uploads/short-url/zTSvDZVfLH0hOnmB8Iup9bS73HG.json) (662 Bytes)

example

---

<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [October 31, 2025, 4:44pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/19 "2025-10-31T16:44:02Z")

</div>

I do not know why in the stack trace shows the number has a float.

It should be an int.

We are breaking at this position in the response.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/7/47d8924795b856a432bd6211f74e716a6a1f0489.png)

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [November 3, 2025, 4:51pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/20 "2025-11-03T16:51:44Z")

</div>

> [@Jean-Maurice\_Dubois](#):
>
> `lstRecipe = AB2.PL03.Recipe.listBetween(startDate, endDate)`

Can you share this function? (If you're more comfortable direct messaging me, that's fine too).

I'm asking because of this line:  
`output.append(lstRecipe[i])`

I don't think there's any problem in the _JSON_ you're ultimately assembling - the problem is somewhere in the Python dictionary structure to JSON conversion we're doing automatically.

---

<div class="post-metadata">

**Author:** ![Jean-Maurice\_Dubois](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jean-maurice_dubois/32/80996_2.png) [@Jean-Maurice\_Dubois](https://forum.inductiveautomation.com/u/Jean-Maurice_Dubois)\
**Post date:** [November 3, 2025, 5:22pm UTC](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887/21 "2025-11-03T17:22:36Z")

</div>

Here is an example of the output of this function:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/3/a/3abe5738ce99636acc681f89e854146fc438faff.png)

So basically, I get the list of the recipe ran that day. Add some data to each “eventId”.

When done, add result to output list.

After all compiled, return results (output)

[Next page](https://forum.inductiveautomation.com/t/system-util-jsonencode-output-not-the-same-in-webdev-module/110887.md?page=2)