SAP SOAP Integration
SOAP integration connects systems to SAP using XML web services with formal WSDL contracts, the classic service-oriented style, still used in enterprise SOA and via middleware.
SOAP integration in SAP exchanges XML messages defined by a WSDL contract, with SAP as provider or consumer through SOAMANAGER and WS-Security protecting the message. It was the mainstay of PI/PO middleware for contract-based integration between enterprise systems. Choose it where a formal contract, WS-* capabilities or a partner that mandates SOAP require it; otherwise REST and OData are preferred.
- WSDL contracts defining the service.
- XML payloads and WS-* standards.
- Watch out: the WSDL is the contract, and a change on either side breaks it silently until the next call.
What SOAP integration does
SOAP integration exchanges XML messages defined by WSDL contracts, with SAP as provider (exposing services via SOAMANAGER) or consumer. Middleware (PI/PO) heavily used SOAP for structured, contract-based integration between enterprise systems.
Key aspects
- WSDL contracts defining the service.
- XML payloads and WS-* standards.
- SOAMANAGER for configuration.
- WS-Security for message security.
When to use it
Use SOAP where a formal contract or WS-* capabilities are required, or to integrate with systems/middleware that mandate it. For new lightweight integrations, REST/OData is generally preferred.
Common pitfalls
- Wrong tool for the integration style.
- Ignoring monitoring/error handling.
- Point-to-point instead of governed integration.