Invoice Payment integration is usually completed via Coupa Standard Flat File Format or IDoc (Intermediate Document). Invoice Payments can be extracted from SAP on scheduled basis and can be output to an SFTP server in the agreed upon format. Here is an example of the standard CSV format:
Sample invoice payment file (save as CSV)
REST APIs are available for those customers who require more control over the integration between Coupa and their SAP environment. For IDoc integration, Coupa supports the PEXR2002 IDoc format for loading Invoice Payments from SAP. The mappings between SAP and Coupa tend to be very similar across our SAP customers but the mappings will still be reviewed and modified if needed during the implementation process. For those customers with PI implemented, we will also provide the transports needed to extract invoice payment IDocs from your SAP environment and send them to our SFTP server.