I am trying to update branch policy of a branch in Azure DevOps repository. I am trying to do it using Rest API calls following documentation from here.

When I run this from Postman, the request completes successfully with status code ‘200 OK’. Upon checking the status of branch policy in Azure DevOps, I am able to see that the option “Limit merge types” is “on”, however, no checkbox is checked under “Allowed merge types:”.

Here is json payload which I used.

POST https://dev.azure.com/{{Org}}/{{ProjectName}}/_apis/policy/configurations?api-version=7.0

{
    "isEnabled": true,
    "isBlocking": true,
    "type": {
        "id": "fa4e907d-c16b-4a4c-9dfa-4916e5d171ab"
    },
    "settings": {
        "useSquashMerge": true,
        "scope": [
            {
                "refName": "refs/heads/test_branch_for_policy",
                "matchKind": "exact",
                "repositoryId": "11223344-480x-4u1h-x16k-112233445566"
            }
        ]
    }
}

It seems "useSquashMerge": true under settings is not being considered.