Is it possible to use the newish bulk update API to update the Jira system-created team field?

[Sean Blezard]

I am trying to bulk update the team field - the one that is provided OOTB by Jira Cloud. I couldn't find it on the standard bulk edit screen and haven't the energy to mess around with a Jira automation trigger based on a label etc. (although it might come to that).

I thought it would be easier with the API: 

https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-issue-bulk-operations/#api-rest-api-3-bulk-issues-fields-post

But team field isn't one of the types listed and I can't the existing ones to work.

Has anyone managed to get this API endpoint working with the team field?

Thanks,

Sean

Update 1:

I tried this payload but it returned:

{"errors":[{"message":"Cannot assign a non-existing team"}]}

Payload:

payload = {
    "editedFieldsInput": {
        "singleSelectFields": [
            {
                "fieldId": "customfield_14504",
                "option": {
                    "id": team_uuid
                }
            }
        ]
    },
    "selectedIssueIdsOrKeys": batch,
    "selectedActions": ["customfield_14504"],  
    "sendBulkNotification": False
}

This made me think the singleSelectFields option might work but clearly not since the value I passed in (the hex-dec key) was a valid team.

Update 2:

I was able to update the team field with the single issue update API endpoint using a payload like this:

{
  "fields": {
    "customfield_14504": team_uuid
  }
}

Is it simply the case that the bulk update endpoint doesn't work properly yet, for the OOTB team field? Am I going to have to iterate over an update for every issue I want to do a bulk update on?