# Tags gives config error

**URL:** <https://forum.inductiveautomation.com/t/tags-gives-config-error/33056>\
**Category:** Ignition\
**Tags:** ignition80, perspective\
**Created:** [March 13, 2020, 7:18am UTC](https://forum.inductiveautomation.com/t/tags-gives-config-error/33056 "2020-03-13T07:18:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![joostjojo](https://avatars.discourse-cdn.com/v4/letter/j/ac91a4/32.png) [@joostjojo](https://forum.inductiveautomation.com/u/joostjojo)\
**Post date:** [March 13, 2020, 7:18am UTC](https://forum.inductiveautomation.com/t/tags-gives-config-error/33056/1 "2020-03-13T07:18:51Z")

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Hi,

I have an UDT in my project.  
And the udt addresses are just fine however the instance gives config error at all tags.  
I can solve this to override those “OPC Item Path” even when I do not change the path to the tag!  
I dont want to overwrite every tag path with just the same path.

here the UDT:  
[alarmudt.json](https://us1.discourse-cdn.com/inductiveautomation/original/2X/d/d22e3b0deccf4b9981cea7d31c5751e3b1bbfc9c.json) (942.6 KB)

and the Instance:  
[alarminstance.json](https://us1.discourse-cdn.com/inductiveautomation/original/2X/e/ec750e54a4734570ed69e7f634ee9646dc898fd5.json) (323.5 KB)

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<div class="post-metadata">

**Author:** ![joostjojo](https://avatars.discourse-cdn.com/v4/letter/j/ac91a4/32.png) [@joostjojo](https://forum.inductiveautomation.com/u/joostjojo)\
**Post date:** [March 13, 2020, 8:46am UTC](https://forum.inductiveautomation.com/t/tags-gives-config-error/33056/2 "2020-03-13T08:46:43Z")

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It seems like the Opc ItemPath takes it litteraly:  
ns=1;s=[{PLCName}]A023\_HMI\_AL[0].3

If I change the {PLCName} to the hardcoded name of the PLC then it works.  
Also if I to the binding again (not typing it but really the binding) then it will work

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<div class="post-metadata">

**Author:** ![joostjojo](https://avatars.discourse-cdn.com/v4/letter/j/ac91a4/32.png) [@joostjojo](https://forum.inductiveautomation.com/u/joostjojo)\
**Post date:** [March 13, 2020, 9:51am UTC](https://forum.inductiveautomation.com/t/tags-gives-config-error/33056/3 "2020-03-13T09:51:50Z")

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I found it, it was the json that ruins how Ignition reads the binding.  
But still strange that the binding is correct on an overwrite then when not changing the path