The MSN adCenter API V6 has 5 different services which authorized users can use to manage adCenter accounts. These 5 services are:
Administration Service – /Administration/AdministrationService.svc
The Administration Service currently handles operations that handle quota data. There are only two operations in the Administration Service at this time (GetAssignedQuota, GetRemainingQuota).
Below you will find raw a successful SOAP request generated by PHP and NuSOAP/0.7.3 and the subsequent successful SOAP request that was returned by adCenter API V6 for accessing the GetNotifications operation of the NotificationManagement service. There are a couple important things to note here
adCenter V6 Production WSDLs
https://adcenterapi.microsoft.com/Api/Advertiser/v6/Administration/AdministrationService.svc?wsdl
https://adcenterapi.microsoft.com/Api/Advertiser/v6/CampaignManagement/CampaignManagementService.svc?wsdl
https://adcenterapi.microsoft.com/Api/Advertiser/v6/CustomerManagement/CustomerManagement.asmx?wsdl
https://adcenterapi.microsoft.com/Api/Advertiser/v6/NotificationManagement/NotificationManagement.asmx?wsdl
https://adcenterapi.microsoft.com/Api/Advertiser/v6/Reporting/ReportingService.svc?wsdl
adCenter V6 Sandbox WSDLs
https://sandboxapi.adcenter.microsoft.com/Api/Advertiser/v6/Administration/AdministrationService.svc?wsdl
https://sandboxapi.adcenter.microsoft.com/Api/Advertiser/v6/CampaignManagement/CampaignManagementService.svc?wsdl
https://sandboxapi.adcenter.microsoft.com/Api/Advertiser/v6/CustomerManagement/CustomerManagement.asmx?wsdl
https://sandboxapi.adcenter.microsoft.com/Api/Advertiser/v6/NotificationManagement/NotificationManagement.asmx?wsdl
https://sandboxapi.adcenter.microsoft.com/Api/Advertiser/v6/Reporting/ReportingService.svc?wsdl