This is a list of PI/PO adapters, sorted by the preferred way of communication from SAP PI point of view regarding reliability, architecture fit, monitoring and maintenance:
SAP Systems
- ABAP (XI) Proxy
- synchronous & asynchronous communication
- dynamic queue assignment
- usage of acknowledgements
- processing of (binary) attachments (PDF, JPG, ..)
- usage of Forward Error Handling (FEH, ECH Error and Conflict Handler)
- IDoc (ALE)
- asynchronous communication
- usage of acknowledgements
- SAP Business Workflow integration
- BAPI/RFC
- synchronous & asynchronous communication
- async communication not recommended (monitoring)
- File
- for standard import programs
- Integration via (S)FTP(s)/NFS
Non-SAP Systems
- SOAP/http
- exchange XML messages via http(s)
- synchronous & asynchronous communication
- reliable async communication via WS-RM protocol
- JMS
- exchange XML messages via queues
- reliable asynchronous communication (exactly once/EOIO)
- usage of drivers necessary (matching the JMS provider)
- JDBC
- integrate database tables/views by reading/writing entries, call stored-procedures
- usage of drivers necessary (matching the database vendor)
- File/FTP
- exchange data (XML/CSV/Flat) via file systems/FTP Server
- asynchronous communication
- Mail
- integrate e-mail systems via smtp/imap/pop3 protocol
- asynchronous communication (at most once)
