MM_PUR_PURCHASE_ORDER is purchase order form. and this standard form uses the FDP_EF_PURCHASE_ORDER_SRV service as data provider. this works fine.

But when similar approach is done to billing invoice, it results in error. pls explain why is there issue with billing and how to correct it.
Form - SDBIL_CI_PROF_SRV_DE
Odata service - FDP_V3_BD_PROF_SERV

Redefine Service

Copy All and Finish

Error
Also in the below link, how CRETAE option is showing up while changing std. OData project. Is it possible to change in std. ?
Adobe form output using Gateway Services [OData] : SAP | SAP Blogs
