# Write target of item '......' does not exist problem

**URL:** <https://forum.inductiveautomation.com/t/write-target-of-item-does-not-exist-problem/8280>\
**Category:** Ignition\
**Created:** [April 9, 2014, 6:58am UTC](https://forum.inductiveautomation.com/t/write-target-of-item-does-not-exist-problem/8280 "2014-04-09T06:58:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![skallepalli](https://avatars.discourse-cdn.com/v4/letter/s/54ee81/32.png) [@skallepalli](https://forum.inductiveautomation.com/u/skallepalli)\
**Post date:** [April 9, 2014, 6:58am UTC](https://forum.inductiveautomation.com/t/write-target-of-item-does-not-exist-problem/8280/1 "2014-04-09T06:58:13Z")

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Inductive Automation Team,

We have Standard Transaction Group in our Project where update mode is DB to OPC. We have following sample Transaction Group structure:  
Item Name(OPS Tag)Target Name(DB Fields from Single table)  
OPC\_Mod1\_WONum \<-- WONum  
OPC\_Mod1\_Bit1 \<-- Mod1\_Bit1  
OPC\_Mod2\_WONum \<-- WONum  
OPC\_Mod2\_Bit1 \<-- Mod2\_Bit1  
OPC\_Mod2\_Bit2 \<-- Mod2\_Bit2

As shown above, for OPC Mod1/Mod2 WONum the target name is same DB Field from Table. Now, we are facing Write target of item ‘Mod2\_WONum’ does not exist. problem. Is it due to using same Target Name (same DB field) from Table? if not, how to resolve this issue?

Eagerly waiting for your response.

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**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\
**Post date:** [April 9, 2014, 1:55pm UTC](https://forum.inductiveautomation.com/t/write-target-of-item-does-not-exist-problem/8280/2 "2014-04-09T13:55:24Z")

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Hi Sasi,

Transaction Groups can behave oddly when duplicating items. Try adding an expression item That is equal to WONum, write to OPC\_Mod2\_WONum, and see if that helps.

Regards,

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**Author:** ![skallepalli](https://avatars.discourse-cdn.com/v4/letter/s/54ee81/32.png) [@skallepalli](https://forum.inductiveautomation.com/u/skallepalli)\
**Post date:** [April 10, 2014, 7:10am UTC](https://forum.inductiveautomation.com/t/write-target-of-item-does-not-exist-problem/8280/3 "2014-04-10T07:10:07Z")

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Jordan,

Thank you for your reply. As you mentioned, we currently used Expression Item and seems to be working fine.

Just for learning, do you have any explanation for duplicating items issue.

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**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\
**Post date:** [April 10, 2014, 9:51am UTC](https://forum.inductiveautomation.com/t/write-target-of-item-does-not-exist-problem/8280/4 "2014-04-10T09:51:33Z")

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Nope. No clue. 😆 Although maybe some suspicions…

I suspect it is looking things up in a “first come, first serve” basis. Once it finds the first thing it sees to write back to, it just won’t look any further.

I think it may have been put in as a feature request once upon a time.

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**Author:** ![skallepalli](https://avatars.discourse-cdn.com/v4/letter/s/54ee81/32.png) [@skallepalli](https://forum.inductiveautomation.com/u/skallepalli)\
**Post date:** [April 11, 2014, 8:36am UTC](https://forum.inductiveautomation.com/t/write-target-of-item-does-not-exist-problem/8280/5 "2014-04-11T08:36:48Z")

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Thank you Jordan.