Symptom
Is OData the only REST-based integration option for C4C?
Environment
SAP Cloud for Customer
Resolution
C4C supports only ODATA rest API service, please refer to SAP Help Portal. It explains that C4C V1 OData version 2 specification. There is no other rest API service protocol supported from C4C side.
If it is necessary to integrate other service to C4C you can check with CPI or any other middleware for achieving the same. In case it is necessary integration of C4C system to an external rest protocol API, check: Integrate an External Web Service Using REST
This can be explored from partner end and can be implemented with the steps mentioned.
Keywords
OData; REST-based; Integration; Option; C4C. , KBA , LOD-CRM-INT-API , OData API (C4C Only) , How To
SAP Knowledge Base Article - Public