# How to resolve data not write from Ignition to OPC UA server based device

**URL:** <https://forum.inductiveautomation.com/t/how-to-resolve-data-not-write-from-ignition-to-opc-ua-server-based-device/108919>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [July 24, 2025, 6:48pm UTC](https://forum.inductiveautomation.com/t/how-to-resolve-data-not-write-from-ignition-to-opc-ua-server-based-device/108919 "2025-07-24T18:48:09Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![bhpatel017](https://avatars.discourse-cdn.com/v4/letter/b/b4bc9f/32.png) [@bhpatel017](https://forum.inductiveautomation.com/u/bhpatel017)\
**Post date:** [July 24, 2025, 6:48pm UTC](https://forum.inductiveautomation.com/t/how-to-resolve-data-not-write-from-ignition-to-opc-ua-server-based-device/108919/1 "2025-07-24T18:48:09Z")

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I have Ignition 8.1 and using it to force output on Murrelektronik make 54631 PN IO Link device having built in OPC UA Server. I am getting following error as attached file

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/a/ba3c27e8b59bbdc3804ba2366432c7b85403d36a.png).

can anyone help me what should I do

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**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:** [July 24, 2025, 6:52pm UTC](https://forum.inductiveautomation.com/t/how-to-resolve-data-not-write-from-ignition-to-opc-ua-server-based-device/108919/2 "2025-07-24T18:52:03Z")

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(assuming your tag in Ignition is not configured to be read only)

This is the Server telling you that writes to the Value attribute of that Node are not allowed.

If there's anything that can be done, it's going to be somewhere in the configuration of that Server, not on the Ignition side.

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<div class="post-metadata">

**Author:** ![bhpatel017](https://avatars.discourse-cdn.com/v4/letter/b/b4bc9f/32.png) [@bhpatel017](https://forum.inductiveautomation.com/u/bhpatel017)\
**Post date:** [July 24, 2025, 6:59pm UTC](https://forum.inductiveautomation.com/t/how-to-resolve-data-not-write-from-ignition-to-opc-ua-server-based-device/108919/3 "2025-07-24T18:59:28Z")

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thanks Kevin. I will check configuration on Server side then

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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:** [July 24, 2025, 7:07pm UTC](https://forum.inductiveautomation.com/t/how-to-resolve-data-not-write-from-ignition-to-opc-ua-server-based-device/108919/4 "2025-07-24T19:07:46Z")

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Another sanity check would be to connect with a different client such as UaExpert and see if you are able to write from that client.

If you are, then Wireshark captures to see what's different between the Ignition client and UaExpert client will be necessary.

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**Author:** ![Marcus\_Sysum](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/marcus_sysum/32/57944_2.png) [@Marcus\_Sysum](https://forum.inductiveautomation.com/u/Marcus_Sysum)\
**Post date:** [July 25, 2025, 4:53pm UTC](https://forum.inductiveautomation.com/t/how-to-resolve-data-not-write-from-ignition-to-opc-ua-server-based-device/108919/5 "2025-07-25T16:53:49Z")

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Also check to make sure that output pin is configured for digital out and not an io-link data pin.