# Mqtt message sends to output nodes that are not connected

**URL:** <https://discourse.nodered.org/t/mqtt-message-sends-to-output-nodes-that-are-not-connected/76240>\
**Category:** General\
**Tags:** mqtt\
**Created:** [7 March 2023 14:32 UTC](https://discourse.nodered.org/t/mqtt-message-sends-to-output-nodes-that-are-not-connected/76240 "2023-03-07T14:32:11Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![freiheit2018](https://avatars.discourse-cdn.com/v4/letter/f/f0a364/32.png) [@freiheit2018](https://discourse.nodered.org/u/freiheit2018)\
**Post date:** [7 March 2023 14:32 UTC](https://discourse.nodered.org/t/mqtt-message-sends-to-output-nodes-that-are-not-connected/76240/1 "2023-03-07T14:32:11Z")

</div>

Hi there,  
I recently encountered the following problem: If I send a mqtt-message to an output node, another output node sends the exact same message, even though it is not connected. How can I fix that?

Thank you for your help,  
regards,  
Jürgen

---

<div class="post-metadata">

**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [7 March 2023 15:15 UTC](https://discourse.nodered.org/t/mqtt-message-sends-to-output-nodes-that-are-not-connected/76240/2 "2023-03-07T15:15:40Z")

</div>

What do you mean by an `output node`? is a `debug` node, a `mitt-out` node some other node?  
What is the other 'output' node?

It is kind of hard to answer you without more information (remember you can see your flow and know your setup but no one else does 😁),  
Things like

- version of Node-red and node.js
- what device is running NR and what OS are you using
- is Docker or HomeAssistant involved
- can you replicate it in a example? If so, provide a copy
- are you using any contrib nodes in the flow and if so what are their full names?

Getting this will help people help you.

---

<div class="post-metadata">

**Author:** ![freiheit2018](https://avatars.discourse-cdn.com/v4/letter/f/f0a364/32.png) [@freiheit2018](https://discourse.nodered.org/u/freiheit2018)\
**Post date:** [7 March 2023 15:38 UTC](https://discourse.nodered.org/t/mqtt-message-sends-to-output-nodes-that-are-not-connected/76240/3 "2023-03-07T15:38:19Z")

</div>

Hi there, I found the problem and had the topic already closed. I accidentally had two identical mqtt topics , that´s why I received the double messages. Thank you for your quick response.

Kind regards,  
Jürgen

---

<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:** [21 March 2023 15:38 UTC](https://discourse.nodered.org/t/mqtt-message-sends-to-output-nodes-that-are-not-connected/76240/4 "2023-03-21T15:38:46Z")

</div>

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.