Hey @Lopez, Oliver
I went perusing through Azure DevOps - Connectors | Microsoft Learn for inclinations on updating a work item assignment. I personally don't know if the issue is with the Azure DevOps connector or the request you're creating.
Having said that, you should be able to use Work Items - Update - REST API (Azure DevOps Work Item Tracking) | Microsoft Learn passing:
{
"op": "add",
"path": "/fields/System.AssignedTo",
"value": "new.identity@example.com"
}
as the body to update the assignment of the work item. For fields that are identity, the email of the user should suffice. Accepted By sounds like a custom field, so I would use Fields - List - REST API (Azure DevOps Work Item Tracking) | Microsoft Learn to make sure the field path of the custom field is correct. I would try this something like Postman to validate the request payload is correct. That way, if it is and the Azure DevOps connector isn't working as expected, you can at least use an HTTP connector. Although if it works in Postman, it should work in the connector. If you get any errors, feel free to drop them in a comment down below.