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I want to place the GUID for the library specified in an automated flow trigger into a variable. This variable will then be passed to a child flow.

The trigger is "when a file is created or modified (properties only)".

When I look at the output of the trigger, I do not see the library listed anywhere.

This child flow will be called by at least 30 library-specific parent flows, so I would prefer not to have to manually pull the library GUID for each parent flow.

Where can I find the GUID of the library, based on the trigger?

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  • Do you need GUID only or you will be fine if you can get the library "name"? How you are using GUID in child flow?
    – Ganesh Sanap - MVP
    Aug 17 at 6:24
  • My understanding is that I must have the library GUID to specify the library in an action like "Update file properties".
    – DeNaeL
    Aug 21 at 14:47

2 Answers 2

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Use flow like this:

enter image description here

Expressions used:

Compose action:

first(split(triggerOutputs()?['body/{Path}'],'/'))

Compose 2 action:

body('Send_an_HTTP_request_to_SharePoint')['d']['results'][0]['Id']

Output:

enter image description here

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  • Thank you - I answered your top level question above. Do I need the GUID to specify the library in an action like "Update file properties"?
    – DeNaeL
    Aug 21 at 14:48
  • I think using either one should work for you. Try using GUID for safer side in case library display name and URL name is different.
    – Ganesh Sanap - MVP
    Aug 21 at 15:27
  • In trying this, I'm getting an empty array from the Send an HTTP request to SharePoint action. I've triple-checked that I've entered everything in the action correctly. Suggestions?
    – DeNaeL
    Aug 21 at 16:36
  • Is it working now or you are still facing this issue? Make sure you have enclosed library name in single quotes.
    – Ganesh Sanap - MVP
    Aug 22 at 2:21
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The only action I can see is Get lists, which will return the lists from the site, this may return what you need.

Alternatively, you could use the SharePoint REST API to return the list details via the Send an HTTP request to SharePoint.

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