Unable to verify partner network publisher id for an app registration on a B2C tenant

Hi @Joseph Lombardo - GOGov ,

The error you're encountering is due to the domain used for verification in Partner Center (DomainA.com)does not match the Publisher Domain (DomainC.com) configured in Azure AD B2C.

To resolve this issue,

1.Update the Publisher Domain in Azure AD B2C

Go to Azure AD B2C -> select your app registration -> Branding & properties -> Update the Publisher Domain to DomainA.com (which has been verified in Partner Center). -> Hit save.

2. Verify DomainC .com in Partner Center

If you want to keep DomainC.com as the publisher domain, you need to verify it in Partner Center,

• Sign in to Partner Center
• Go to Account settings ->Identity & access management
• Under Manage Domains -> add DomainC.com
• Follow the domain verification steps. Once verified, retry setting the verified publisher in Azure AD B2C.

3. Ensure the Correct Microsoft Partner Account is Linked

If DomainA.com is linked to a different Partner account, ensure it is correctly associated with your B2C tenant and has the necessary permissions.

Please refer this MS doc, for better understanding of publisher verification.

Hope this helps.

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