Using method “DUMPSETSET_GET_ENTITYSET” in SAP FM

Note that you need to map GetEntitySet to a data source from SEGW - SAP Gateway Service Builder and you will be able to generate runtime objects.

For more details you can refer to this link:

https://blogs.sap.com/2012/10/26/step-by-step-guide-to-build-an-odata-service-based-on-rfcs-part-1/