We have developed a standard SAP Training about managing inbound interfaces (ABAP Proxies) in SAP S/4HANA and SAP Business Suite (ERP, CRM, …): WIFMS4.
You learn how to implement a robust error handling using already available (and free) SAP standard technology:
- Forward Error Handling (FEH) and
- Error and Conflict Handler (ECH)
without the need of implementing a heavy solution, such as SAP AIF.