Set AssociatedOwnerGroup for a web using REST

ganeshsanap

Yes, I'm aware that it's possible using PnP PowerShell but I'm specifically looking to do it in Power Automate using REST API as I'm trying to automate the entire process. And to use PnP PowerShell, we have to use either Azure Function or Azure Automation Runbook which unfortunately isn't an option for me.

On this reference page for site-related resources and endpoints for the SharePoint REST API - https://learn.microsoft.com/en-us/previous-versions/office/developer/sharepoint-rest-reference/dn499819(v=office.15)

it's mentioned that the AssociatedMemberGroup, AssociatedOwnerGroup and AssociatedVisitorGroup are available via REST API and are read/write properties (of the web) of type https://learn.microsoft.com/en-us/previous-versions/office/developer/sharepoint-rest-reference/dn531432(v=office.15). So I tried to update it with the 'Send an HTTP request to SharePoint' action with the below parameters and it runs successfully but it doesn't update the site owner group.

And if I run it with GET method without the parameters, it successfully gives me the current owner group.

So I'm trying to figure out the right parameters for the POST request but haven't been successful so far. Any help would be appreciated. Thanks in advance!