How To Fix WZRE_PRX002 - Application processing class &1 for use case type &2 is not existing

WZRE_PRX002 - Overview

• Message type: E = Error

• Message class: WZRE_PRX - SOA messages from proxy implementations

• Message number: 002

• Message text: Application processing class &1 for use case type &2 is not existing

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WZRE_PRX002 - Application processing 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_PRX002: Application processing class &1 for use case type &2 is not existing
  
  
  Cause:
  This error occurs when the system tries to find an application processing class for a specific use case type but cannot find it in the configuration or repository. In SAP, use case types are linked to processing classes that handle specific business logic or processing steps. If the class is missing, incorrectly configured, or not assigned, the system throws this error.
  Typical scenarios include:
  
  Missing or incorrect configuration in the use case type to processing class assignment.
  The processing class has been deleted or not transported to the system.
  Custom developments where the class name is incorrectly specified.
  Incomplete or incorrect setup in the SAP Business Workflow or related modules.
  
  
  
  Solution:
  
  
  Check Configuration:
  
  Go to the customizing transaction where use case types are maintained (this depends on the module, e.g., SAP RE-FX, SAP CRM, or