Is there a trial version available for the Enterprise Services Repository and Registry?

Yes. The Enterprise Services Repository is currently available for download in the SAP Developer Network (SDN). It is bundled with some sample artifacts to jumpstart the adoption. However, please note that the ES Repository needs to be deployed on a SAP NetWeaver Composition Environment server.

SAP PI Interview Questions and SAP PI Tutorials

SAP PI Interview Questions and SAP PI Tutorials

The Services Registry is pre-delivered with the trial version of SAP NetWeaver Composition Environment server, which is available here.