The Account Number submitted in the port in request for this phone number does not match the losing carrier's information.
The Account Number submitted for the port in request does not match the losing carrier's information.
Update Account Number in the port in request to one that matches the losing carrier's information.
Note if this is the only phone number in a port in request that got rejected you may need to start a new port in request with this phone number so that you can correct the account number as it may be different from the other phone numbers in this request.