Proof of domain ownership has failed. Make sure that the TXT record for the specified domain is available in DNS. The format ...

Proof of domain ownership has failed. Make sure that the TXT record for the specified domain is available in DNS. The format of the TXT record should be "example.com IN TXT AppID=appid-value" where example.com should be replaced with the domain you want to configure for federation, and appid-value should be replaced with the Application Identifier (AppID) of the federation trust.