Hi Rodrigo,Certificate based authentication is supported in the connection from CIG to S4HC in IES 42K flow i.e. both basic and certificate based authentication are supported.

Hi Maaz,Few parameters are required to be maintained to send the text descriptions at line level for internal and external users in request for quotation.https://help.sap.com/docs/ARIBA_CIG/32ba8b3dbca645e9b8b7b3e84d61e3db/334e414dd10647208d87c54f248...

Hi Shashank,SAP does not support integration via native APIs. All integrations from S/4 HANA to Ariba must be via CIG.