MS Graph: Cannot update Person or Group Field in Sharepoint list

Jan-Niclas 1 Reputation point

I am trying to update the contents of a person or group field of a specific item in a Sharepoint list. However searching through the docs I could not find any examples, so I created a flow that does just that to take a look at the code. Pasting the code into MS Graph Explorer returns a 200 but does not change anything. Updating fields like the title, links or whatsoever work. I am using a PATCH request with the url:

and the following body:
"Claims": "someuser@Company portal .com"

Microsoft Graph
Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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  1. Deva-MSFT 2,256 Reputation points Microsoft Employee

    Say, you have field "Category" then if it's lookup field is single, then you want to try the below and see if it helps.

    Method: PATCH
    Body: {
    "CategoryLookupId": "1"