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viewfile
Advocate II
Advocate II

"channel_not_found" error when trying to join a public Slack channel from Flow

We have a simple Flow that posts to a Slack channel.  This works fine if the user running the Flow is already a member of the Slack channel.  If they aren't a member then we get a "not_in_channel" error when the "Post message" action runs.

To try and fix this I added a "Join Public Channel" action before the post action.

However, when this action runs we get a "channel_not_found" error:

Screenshot 2020-10-19 114731.png

The channel exists as the post action works using the same channel name.

Has anyone else come across this issue?

 

We have a lot of Slack channels, so I'm thinking it may only be searching the first 100 Slack channels and as the channel that is being joined is a new one, it's not found.  To try and prove this, I've created another Flow that uses the get public channels action and writes this array to a csv and this only seems to retrieve 100 channels.

Any help/work-arounds gratefully received,

Ian

1 ACCEPTED SOLUTION

Accepted Solutions

Hi viewfile, 

 

Please, instead of use the name of the channel, check the url of the channel that you want to use:

 

This is an example:

https://app.slack.com/client/T01CH7G95/C01CXK44LLV/details/top

 

Take the last numbers and configure it in the custom value.

 

FCGALLEG_0-1603274617142.png

 

I hope it helps you.

 

Javier

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4 REPLIES 4
FCGALLEG
Community Support
Community Support

Hi viewfile, 

 

How do you have configured the action Join a public channel? are you using a variable?

 

FCGALLEG_0-1603271544090.png

Thanks,

JAvier

Hi, the channel I want to join was not listed, so I selected the "Enter Custom Value" option at the bottom of the list and manually typed in the name of the channel - I didn't use a variable.

Hi viewfile, 

 

Please, instead of use the name of the channel, check the url of the channel that you want to use:

 

This is an example:

https://app.slack.com/client/T01CH7G95/C01CXK44LLV/details/top

 

Take the last numbers and configure it in the custom value.

 

FCGALLEG_0-1603274617142.png

 

I hope it helps you.

 

Javier

Yes!  Thank-you, that's worked.  So passing in the Channel ID, not the Channel Name works.

 

When I test the Flow now, I see the Action completes as follows:

Screenshot 2020-10-21 111144.png

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