# What data does opcua-click subscribe to

**URL:** <https://discourse.nodered.org/t/what-data-does-opcua-click-subscribe-to/83829>\
**Category:** General\
**Tags:** opcua\
**Created:** [19 December 2023 07:56 UTC](https://discourse.nodered.org/t/what-data-does-opcua-click-subscribe-to/83829 "2023-12-19T07:56:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![xpxiong](https://avatars.discourse-cdn.com/v4/letter/x/258eb7/32.png) [@xpxiong](https://discourse.nodered.org/u/xpxiong)\
**Post date:** [19 December 2023 07:56 UTC](https://discourse.nodered.org/t/what-data-does-opcua-click-subscribe-to/83829/1 "2023-12-19T07:56:26Z")

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I try again to use the opcua-client node in Node-red-contrib-opcua to subscribe to the data. How do I know what data is currently subscribed to by the client node?

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**Author:** ![xpxiong](https://avatars.discourse-cdn.com/v4/letter/x/258eb7/32.png) [@xpxiong](https://discourse.nodered.org/u/xpxiong)\
**Post date:** [19 December 2023 09:17 UTC](https://discourse.nodered.org/t/what-data-does-opcua-click-subscribe-to/83829/2 "2023-12-19T09:17:30Z")

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Since I see a bit of NodeId coming out with two identical values at once, I suspect that I have subscribed twice

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [17 February 2024 09:17 UTC](https://discourse.nodered.org/t/what-data-does-opcua-click-subscribe-to/83829/3 "2024-02-17T09:17:32Z")

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