How To Fix WRPC_XI_PROXY008 - Only TypeCode=1 is supported in &1

SAP Error Message - Details

• Message type: E = Error

• Message class: WRPC_XI_PROXY -

• Message number: 008

• Message text: Only TypeCode=1 is supported in &1

Self-Explanatory Message

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• What is the cause and solution for SAP error message WRPC_XI_PROXY008 - Only TypeCode=1 is supported in &1 ?

  SAP Error Message:
  
  WRPC_XI_PROXY008 Only TypeCode=1 is supported in &1
  
  Cause
  This error typically occurs in the context of SAP PI/PO (Process Integration / Process Orchestration) or when dealing with proxy communication in SAP systems. The message indicates that the system encountered a data type or serialization format that it does not support.
  
  TypeCode=1 refers to the primitive data type in the SAP proxy runtime.
  The error means that the proxy runtime expects only primitive types (TypeCode=1) but received a complex or unsupported type.
  This often happens when the proxy interface or the message structure contains complex types or collections that are not supported by the current proxy runtime or adapter.
  It can also occur if the message payload or the data type used in the proxy is not aligned with the expected format, e.g., trying to send a complex object where only primitive types are allowed.
  
  
  When does it occur?
  
  During proxy message processing (sending or receiving).
  When using certain adapters or communication channels that only support primitive types.
  When the proxy interface or the message type is incorrectly defined or mismatched.
  When the XI runtime tries to deserialize a message and encounters an unsupported type.
  
  
  Solution
  
  
  Check the Proxy Interface Definition:
  
  Verify that the proxy interface uses only supported data types.
  Avoid complex types or collections if the runtime or adapter does not support them.
  If complex types are needed, ensure the runtime and adapters support them.
  
  
  
  Adjust the Message Type:
  
  Modify the message type to use primitive types where possible.
  If complex types are necessary, consider using different communication methods or adapters that support them.
  
  
  
  Update or Patch SAP System:
  
  Sometimes, this error can be due to a bug or limitation in the SAP kernel or proxy runtime.
  Check SAP Notes for any patches or updates related to proxy runtime and XI adapters.
  
  
  
  Check Adapter/Channel Configuration:
  
  Ensure the adapter or communication channel supports the data types used.
  For example, some adapters only support primitive types and not complex structures.
  
  
  
  Review the Payload:
  
  Check the actual XML or message payload being sent.
  Make sure it conforms to the expected schema and data types.
  
  
  
  Consult SAP Notes:
  
  Search SAP Support Portal for the error message or related notes.
  Example SAP Note: 1789270 - "WRPC_XI_PROXY008 Only TypeCode=1 is supported in ..."
  
  
  
  
  Related Information
  
  
  TypeCode in SAP Proxy Runtime:
  
  TypeCode=1: Primitive types (e.g., string, int, boolean)
  Other TypeCodes: Complex types, arrays, etc.
  
  
  
  Proxy Runtime Limitations:
  
  Some proxy runtimes or adapters only support primitive types.
  Complex types require specific handling or different adapters.
  
  
  
  SAP PI/PO and Proxy Communication:
  
  Proxy interfaces must be designed according to the capabilities of the runtime.
  Mismatches between interface definition and runtime capabilities cause errors like this.
  
  
  
  SAP Notes and Documentation:
  
  Always check the latest SAP Notes for updates or known issues.
  SAP Help Portal for Proxy Runtime and XI Adapter documentation.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Proxy runtime received unsupported data type (only primitive TypeCode=1 supported).
  
  
  Solution
  Use only primitive types in proxy interfaces, adjust message types, check adapter support.
  
  
  Related Info
  Proxy runtime TypeCode definitions, adapter limitations, SAP Notes (e.g., 1789270).
  
  
  
  
  If you provide more context (e.g., scenario, adapter used, message type), I can help with a more specific solution.