Consuming Released API in RAP action handler

[#1]

Hello experts,

I have a requirement to build a fiori application where user will upload excel file containing purchase orders and we need to post supplier confirmation after some initial validations. 
I have done one POC to consume api API_SUPPLIERCONFIRMATION to post supplier confirmation in RAP action and it is working fine. I wanted to know whether it is a recommended approach to consume released api from ABAP as it introduces a http overhead? If we cannot find any released BO then can we go with calling released api from ABAP?

Thank you in advance for your support.

Imteyaz

[sravan_aleshwaram]

Hello @md_alam 

For an ABAP Cloud/RAP application, the recommended approach is to use a released API/business object whenever available instead of calling the OData API via HTTP from ABAP.

Use a released RAP BO/API if SAP provides one for Supplier Confirmation.
Calling API_SUPPLIERCONFIRMATION via HTTP from ABAP works but introduces network/HTTP overhead, authentication handling, and additional error management.
If no released BO or API is available in ABAP Cloud, consuming the released OData API (API_SUPPLIERCONFIRMATION) is the supported fallback approach.
For mass processing from Excel uploads, validate the data first and then process confirmations in batches to optimize performance.

Recommendation,

Check whether a released BO/API exists for Supplier Confirmation in your S/4HANA release.
If not available, use the released API_SUPPLIERCONFIRMATION OData service from RAP/ABAP.
The HTTP overhead is generally acceptable unless you are processing very high volumes.

Thanks,
Sravan