# The specified msg.topic is not supported

**URL:** <https://discourse.nodered.org/t/the-specified-msg-topic-is-not-supported/77291>\
**Category:** General\
**Created:** [5 April 2023 20:38 UTC](https://discourse.nodered.org/t/the-specified-msg-topic-is-not-supported/77291 "2023-04-05T20:38:35Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [7 October 2023 20:36 UTC](https://discourse.nodered.org/t/the-specified-msg-topic-is-not-supported/77291/21 "2023-10-07T20:36:20Z")

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I don't understand the relevance of the issue you linked to.

Show us a screenshot of the error please.

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**Author:** ![ninaaa](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ninaaa/32/93493_2.png) [@ninaaa](https://discourse.nodered.org/u/ninaaa)\
**Post date:** [9 October 2023 16:25 UTC](https://discourse.nodered.org/t/the-specified-msg-topic-is-not-supported/77291/22 "2023-10-09T16:25:36Z")

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Hello,

As I described earlier, the S7 node has the “Send only on value changes (Diff)” option. When I select this, the SVG node cannot be updated in the dashboard and I have different states in the dashboard on multiple devices.

If I don't select this option in the S-7 node, SVG nodes are displayed correctly in the dashboard on all devices, but I get the warning "msg topic is not supported" in the debug.

I think if an object is described again in the SVG it triggers this warning.

I tried to find a solution from the post above, but now the message appears

1)Msg has no string ID or empty string or contains non alpha-numeric characters:  
2){"payload":[{"command":"update\_text","selector":"#Boden\_temp","textContent":"17.8°C"},{"command":"update\_attribute","selector":"#Boden\_temp","attributeName":"fill","attributeValue":"rgb(146,0,109)"}],"topic":"wohnzim\_temp\_ist\_ew24\_DB5.DBW58","\_msgid":"df906a1d8044c89e","\_event":"node:103f92de2f46f555"}

you can ignore the warnings?

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<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [9 October 2023 19:08 UTC](https://discourse.nodered.org/t/the-specified-msg-topic-is-not-supported/77291/23 "2023-10-09T19:08:23Z")

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Do you mean you can now create the error without the S7 node? If so then post the failing flow.

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**Author:** ![ninaaa](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ninaaa/32/93493_2.png) [@ninaaa](https://discourse.nodered.org/u/ninaaa)\
**Post date:** [12 October 2023 11:44 UTC](https://discourse.nodered.org/t/the-specified-msg-topic-is-not-supported/77291/24 "2023-10-12T11:44:06Z")

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Hello

After reinstalling Ubuntu on Raspberry, the warning no longer appears.

Is there a way to reset nod-red to factory defaults without uninstalling it?

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<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [12 October 2023 12:34 UTC](https://discourse.nodered.org/t/the-specified-msg-topic-is-not-supported/77291/25 "2023-10-12T12:34:33Z")

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Delete your .node-red folder. It will be re-created when you restart node-red.

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