Azure Artifact Signing organisation identity validation failed after document upload with no reason shown

I created a public organisation identity-validation request for a UK private limited company. The personal identity/Verified ID stage completed successfully.

Microsoft then requested additional evidence of domain ownership. I uploaded the original paid registrar invoice, which identifies the domain, owner/company, registrar, registration date and registration term. The portal accepted the document and the status changed from “Action Required” to “In Progress”, but it later changed to “Failed”.

The portal and notification email provide no reason for the failure, and the failed request no longer offers an option to upload another document. The organisation details entered in the request match the public Companies House record. The company was incorporated in August 2026.

Could a Microsoft moderator please advise:

How can the specific reason for rejection be obtained without purchasing a paid Azure support plan?

Can this be escalated privately to the Artifact Signing validation team, or can the request be reopened/reset?

If a new validation request is required, what information or evidence should be changed?

Is there an official minimum company age or trading-history requirement for public organisation validation?

I can provide the validation ID, subscription ID and supporting documents privately to an authorised Microsoft representative, but I have not included them in this public post.