Reg Vendor Creation Standard Service

Hi,

I am trying to work on a scenario involving Enterprise Services. Can some one please confirm on the Vendor Creation service from ES workplace.

I browsed and could find this service. SupplierERPCreateRequest_In. But this service is Asynchronous. My scenario is a synchronous scenario. Can someone please provide some input whether I am using the correct service . if yes, then how can this be handled for synchronous communication.