How To Fix WZRE_PRX003 - Mapping outbound 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: 003

• Message text: Mapping outbound 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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WZRE_PRX003 - Mapping outbound 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_PRX003: Mapping outbound class &1 for use case type &2 is not existing
  
  Cause:
  This error occurs when the system tries to find a mapping outbound class for a specific use case type during proxy communication (typically in SAP PI/PO or SAP Process Integration scenarios), but no such mapping class is maintained or assigned in the configuration.
  
  Outbound class: This is a class responsible for transforming or mapping the outbound message payload.
  Use case type: This refers to a specific scenario or message type for which the mapping is expected.
  
  The system expects a mapping class to be assigned for the given use case type but cannot find it in the configuration tables or customizing.
  
  When does it occur?
  
  During outbound proxy processing.
  When the system tries to determine the mapping class for a particular outbound message.
  If the mapping is missing or incorrectly configured in the Integration Builder or in the SAP backend.
  
  
  Solution:
  
  
  Check the mapping configuration:
  
  Go to the relevant customizing transaction or configuration node where outbound proxy mappings are maintained.
  For example, in SAP PI/PO, check the Integration Directory or ESR (Enterprise Services Repository) for the mapping assignments.
  In the backend, check the configuration for the outbound proxy or the use case type mapping.
  
  
  
  Maintain the missing mapping:
  
  Assign the correct outbound mapping class to the use case type.
  This might involve:
  
  Creating or identifying the correct outbound mapping class.
  Assigning it to the use case type in the customizing or configuration.
  
  
  
  
  
  Verify the use case type:
  
  Ensure that the use case type passed in the message or configuration is correct and consistent.
  Sometimes, a typo or incorrect use case type leads to this error.
  
  
  
  Transport and activate changes:
  
  After maintaining the mapping, transport the changes if necessary.
  Activate the configuration.
  
  
  
  Test the scenario again:
  
  Trigger the outbound proxy call again to verify that the error is resolved.
  
  
  
  
  Related Information:
  
  
  Transactions and tools to check:
  
  SPRO: For customizing related to proxy and mapping.
  SE24 / SE80: To check or create mapping classes.
  SXMB_MONI: To monitor messages in PI/PO.
  SOAMANAGER: For web service configuration.
  Integration Builder / ESR: For mapping and interface configuration.
  
  
  
  Notes and documentation:
  
  Check SAP Notes related to proxy mapping errors.
  Review SAP Help Portal documentation on proxy outbound processing and mapping.
  
  
  
  Common scenarios:
  
  Custom outbound proxy interfaces where the mapping class is not generated or assigned.
  Upgrades or transports where mapping assignments are missing.
  Custom use case types introduced without proper mapping configuration.
  
  
  
  
  If you provide the exact use case type and outbound class names, I can help you with more specific steps or code snippets.
  
  Summary:
  
  
  
  Aspect
  Description
  
  
  
  
  Cause
  Missing or incorrect mapping outbound class assignment for the given use case type.
  
  
  Solution
  Maintain and assign the correct outbound mapping class to the use case type in configuration.
  
  
  Related Info
  Check proxy configuration, mapping assignments, use case type correctness, and SAP Notes.
  
  
  
  
  If you need help with the exact customizing path or code, please share your SAP system version and scenario details.