Artifact Signing organization identity validation failed without a reason

Our Artifact Signing public organization identity validation changed to Failed after the designated representative completed the Microsoft-requested government-ID and face-verification process. The Azure portal and notification email provide no failure reason, no actionable details, and no relevant activity-log event.

The organization name, business address, and primary and secondary company-domain email addresses were supplied. Could a Microsoft Artifact Signing engineer review the failed validation privately, tell us which organization-verification requirement could not be confirmed, and advise whether the existing request can be reset or must be recreated?

I can provide the validation ID and subscription ID through a private support channel, but I am not posting them publicly.