Hello,
thanks for the two answers. I checked them both, yielding no better result.
As I wrote, in my opinion the model class configuration is missing in table /IWBEP/I_MGW_SRH.
When I leave out the entity set, I get valid data (try with https://sapes1.sapdevcenter.com/sap/opu/sdata/IWCNT/LEAVEMANAGEMENT), no matter whether I use odata or sdata channel.
However, when calling https://sapes1.sapdevcenter.com/sap/opu/sdata/IWCNT/LEAVEMANAGEMENT/LeaveRequestCollection, I get the "no service found" message, which stems from the missing line in /IWBEP/I_MGW_SRH.
Björn