Not a bug "Please enter at least one valid recipient" despite having recipients in API request

[Kao]

Affected version

2.1

I've been trying to make a POST API request /api/conversations?recipient_ids=1&title=test&message=test and I only get the error that I need to enter at least one valid recipient. I've tried multiple user IDs, and the user whose this API key is taken from has the permission to message these users. The API key also has the proper scope conversation:write

{
    "errors": [{
        "code": "please_enter_at_least_one_valid_recipient",
        "message": "Please enter at least one valid recipient.",
        "params": []
    }]
}

 

[Paul B]

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