The four important SAP Transaction codes for ODATA Service
/nSEGW –> This Transaction is used to create an OData service in the Backend.
/n/IWFND/MAINT_SERVICE –> Register the OData service in the frontend.
/n/IWFND/GW_CLIENT –> Execute the HTTP Method in the frontend.
/n/IWFND/ERROR_LOG –> To view the Error logs in the OData Service.