Showing results for 
Search instead for 
Did you mean: 
New Member

Issue With Flow Updates for SharePoint List

I was settings up a custom action in Flow to update a List every time a new item was added, and keep getting an Output Error “Bad Gateway” for the Flow Output.

I can tell that it is registering the addition of a new file, however it is not wanting to process the update to the list.


The list I created has a custom ID column that is set with parameters to add 400 to the ID value and Prefix it with a custom acronym.

The new Item ID values kept getting set to 400 instead of 403-404-405 etc.

However, when I go to the list settings and select the Change Request ID Field and simply press the *Okay* button on the form, I can return to the Change Request List and see that the fields had been updated with the proper corresponding ID instead of just "CR-400".


That was essentially the solution I’m trying to Automate with Flow, if you have any suggestions I would greatly appreciate it.

Super User III
Super User III

@Karrde- as I understand it, you have a text column in your list and want Flow to populate that column with a custom prefix (ABC-) followed by the ID plud 400.


Can you post a screen shot of your Flow?



If I have answered your question, please mark your post as Solved.
If you like my response, please give it a Thumbs Up.


Hello, @Karrde!


Thank you for posting on the Flow Community Forum! Have you had an opportunity to apply @ScottShearer‘s recommendation to adapt your Flow? If yes, and you find that solution to be satisfactory, please go ahead and click “Accept as Solution” so that this thread will be marked for other users to easily identify!

Thank you for being an active member of the Flow Community!


Flow Community Manager

- Gabriel
Community Manager
Power Automate | Power Virtual Agents
Super User Program Manager

Helpful resources

MBAS Attendee Badge

Claim Your Badge & Digital Swag!

Check out how to claim yours today!

MPA User Group

Welcome to the User Group Public Preview

Check out new user group experience and if you are a leader please create your group


Are Your Ready?

Test your skills now with the Cloud Skill Challenge.

Top Solution Authors
Users online (62,069)