Artifact Signing: Organization Validation Failed After Domain Evidence Submission

Problem description

I am seeking assistance with the organization identity validation process for Azure Artifact Signing. After submitting domain ownership evidence, the validation status changed to 'Failed' without specific details on the reason. I want to understand which verification requirement failed and how to resolve this issue.

Environment

Product: Artifact Signing; Validation flow: Public Trust organization identity validation; Stage: Domain-related evidence submission during identity validation; Region: not specified in the case information.

What I've already tried

I submitted a PDF containing the original paid domain registration receipt, current registrar contact info, ICANN registration details, and an ownership transfer letter. The registrar cannot reissue the original receipt. I have not received any specific feedback or error details from Microsoft regarding the failure.

Current status

I am requesting a manual review of the failed organization identity validation, with clarification on which verification requirement did not meet the criteria, and guidance on how to successfully complete the process.