How To Fix WZRE_PRX001 - Mapping inbound class &1 for use case type &2 is not existing

SAP Error Message - Details

• Message type: E = Error

• Message class: WZRE_PRX - SOA messages from proxy implementations

• Message number: 001

• Message text: Mapping inbound class &1 for use case type &2 is not existing

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WZRE_PRX001 - Mapping inbound class &1 for use case type &2 is not existing ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WZRE_PRX001: Mapping inbound class &1 for use case type &2 is not existing
  
  Cause:
  This error occurs when the system tries to process an inbound message or data using a specific inbound class (handler class) for a given use case type, but the mapping for this inbound class does not exist or is not maintained in the system.
  In SAP PI/PO or SAP Cloud Integration scenarios, inbound processing classes are used to handle incoming messages based on the use case type. If the system cannot find the appropriate inbound class mapping for the specified use case type, it throws this error.
  Typical reasons:
  
  The inbound class has not been configured or assigned for the use case type.
  The configuration was deleted or not transported properly.
  Custom inbound class was created but not registered in the system.
  Incorrect use case type or inbound class name in the configuration.
  
  
  Solution:
  
  
  Check the Configuration:
  
  Go to the relevant configuration transaction or customizing node where inbound classes are mapped to use case types.
  For example, in SAP PI/PO, check the Integration Directory or the relevant customizing for inbound processing classes.
  
  
  
  Maintain the Mapping:
  
  If the mapping is missing, create or maintain the inbound class for the specified use case type.
  Ensure the inbound class name (&1) and use case type (&2) are correctly entered.
  
  
  
  Verify Class Existence:
  
  Check if the inbound class (&1) actually exists in the system (e.g., in SE24 or SE80).
  If it is a custom class, ensure it is properly implemented and activated.
  
  
  
  Transport and System Consistency:
  
  If the configuration was recently transported, verify that the transport was successful and consistent across systems.
  
  
  
  Check for Typographical Errors:
  
  Verify that the use case type and inbound class names are correctly spelled and match the expected values.
  
  
  
  Consult SAP Notes:
  
  Search for any SAP Notes related to this error message for your specific SAP version or module.
  
  
  
  
  Related Information:
  
  Use Case Type: This is a categorization or identifier for a particular inbound processing scenario.
  Inbound Class: A class that implements the logic to process inbound messages for a given use case.
  Transaction Codes: Depending on the module, you might use SPRO, SXMB_IFR, or other integration-related transactions to maintain these mappings.
  SAP PI/PO or SAP Cloud Integration: This error is common in middleware or integration scenarios where inbound message processing is customized.
  Debugging: If the error persists, debugging the inbound processing logic or checking system logs (SM21, ST22) might provide more insights.
  
  
  If you provide the exact module or context (e.g., SAP PI, SAP CRM, SAP S/4HANA), I can give more tailored instructions.