Based on a WSDL definition, you can generate the implementation skeleton of the services. This skeleton is presented as a CAF application service containing service operations with their input and output parameters. After you generate the implementation skeleton, you can implement its business logic with the corresponding operations of the associated CAF application service.
SAP NetWeaver Developer Studio is properly configured to connect to the Service Registry or to the Enterprise Service Registry for SAP NetWeaver Composition Environment, and you have the necessary authorizations for browsing.