We have verified partner profile and found that MPN ID: 4307732 has become invalid.
In order to renew MPN Id, partner need to login to partner site (https://partners.microsoft.com) and renew partner ID.
Once partner Id renewed, request partner to complete AEP Renew Process on MEPN website using MPN ID: 4307732
If your facing any issue while validating/renewing MPN ID we request you to contact Regional Service center for further assistance.
You can contact Regional Service Center Support at http://partnersupport.microsoft.com/en-us/newthread?threadtype=Questions&cancelurl=/en-us or call at +43-(0)1 36 02 77 25 80, +49 (0)5241 17 95023 , Opening hours: 08:30 - 18:00, mon - fri. They will be assist you on this issue and resolve at the earliest.
Please let us know in case of any concerns.