Quick question about WFM bulk export 422 error for digital channels

Quick question about WFM bulk export failing with HTTP 422 Unprocessable Entity. The job targets digital channel interactions in Europe/London. The payload specifies view: FULL and correct date ranges, yet the system rejects it immediately. No helpful error details in the response body. Is this a known limitation for chat transcript metadata in the current WFM API version? Here is the payload:

{
 "view": "FULL",
 "date_from": "2023-10-01T00:00:00.000Z",
 "date_to": "2023-10-02T00:00:00.000Z"
}