# Opc ua client error

**URL:** <https://discourse.nodered.org/t/opc-ua-client-error/86519>\
**Category:** General\
**Created:** [18 March 2024 11:42 UTC](https://discourse.nodered.org/t/opc-ua-client-error/86519 "2024-03-18T11:42:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![PRABHAKAR82](https://avatars.discourse-cdn.com/v4/letter/p/e47c2d/32.png) [@PRABHAKAR82](https://discourse.nodered.org/u/PRABHAKAR82)\
**Post date:** [18 March 2024 11:42 UTC](https://discourse.nodered.org/t/opc-ua-client-error/86519/1 "2024-03-18T11:42:30Z")

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I am able to read opc ua tag data into opc ua client software but when i tried to connect it to node-red then i got following error.  
"connectio error type error:cannot read property of undefined reading(reading,applicationuri)"

 ![OPC1](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/b/c/bc8bac8a83ee7c1ca48db9c89413f72521a141f7.png)  
 ![OPC2](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/3/7/377e6360e7b3443f8d81aa7f9095399f1b2ba8be.png)

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**Author:** ![nico25](https://avatars.discourse-cdn.com/v4/letter/n/d2c977/32.png) [@nico25](https://discourse.nodered.org/u/nico25)\
**Post date:** [18 March 2024 12:20 UTC](https://discourse.nodered.org/t/opc-ua-client-error/86519/2 "2024-03-18T12:20:22Z")

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Can you add screenshots on how you configured "opa-ua item" and "opc ua client" nodes?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [16 June 2024 12:21 UTC](https://discourse.nodered.org/t/opc-ua-client-error/86519/3 "2024-06-16T12:21:01Z")

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