Standard Fiori OData Service SRA017_SALESORDER_CREATE_SRV not available in SEGW and SICF

Hi, I am very new to Fiori & OData

I am trying customize standard create sales order app.

I was able to download code from UI5 repository and changed it as per my requirement.

Now I would like to customize standard OData service. But i could find SRA017_SALESORDER_CREATE_SRV in SEGW and SICF.

I can see other standard fiori services except SRA017_SALESORDER_CREATE_SRV

Where can I find this service

Please guide me.

screen shot below for reference