The mailbox database copy '{0}\{1}' has failed to update from server {2}. Do you want to clean up that update request now? ...

The mailbox database copy '{0}\{1}' has failed to update from server {2}. Do you want to clean up that update request now? Seeding cannot be requested for the same database copy until the failed request has been cleaned up by the server, which should automatically happen within 15 minutes.