Odata Service in NWGW or ECC Backend

Hi All,

I am getting a little confused about whether the Odata service needs to be created in NWGW or ECC backend.

From what I have read in the documents it needs to be created at NWGW ie Front End. I followed step by step procedure to create Odata service and figured out that the Service Implementation Modal and data classes were also created in the FE. While when I take a look at the Fiori Odata services offered by SAP, the Modal and Data classes are in the Backend ECC.

Is it there something I am missing or something I am getting confused about? Pls share your expertise.

Thanks,

Parth Jhalani