Power Automate : Adding an O365 Group as Contributor for a Document Library

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 Its very straights forward to do this if you have experience working with the 'Send an HTTP request to SharePoint' action before. Here are the things you need to follow :

1. Break the Inheritance for the library so it has unique permissions.

2. Get the Office Group principal ID for the Team ID or Office Group ID

3. Parse JSON - Parse for principal ID

4. Post a roleassignements for the doc library with the principal ID.


1. Breaking Inheritance : Make a http post request to SPOL with this URL assuming Documents is the Doc library where you like to add Contributor permissions.

_api/lists/getByTitle('Documents')/breakroleinheritance(copyRoleAssignments=true, clearSubscopes=true)

2. Get the principal id of the Team/OfficeGroup ID by making a Get request where the variable TeamID is your Team/Group ID and parse the body to extract the Princiapl ID

_api/web/siteusers('c:0o.c|federateddirectoryclaimprovider|@{variables('TeamID')}')

3. Now do a post request to add the principal id as the Contrinutor to the library

_api/lists/getByTitle('Documents')/roleAssignments/addroleassignment(principalId=@@{variables('prinID')}}, roledefId=1073741827)

It does look like the below :



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