How To Fix WES_OUTBOUND049 - Class &1 is not abstract or derived from &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WES_OUTBOUND - Messages for Outbound Services

• Message number: 049

• Message text: Class &1 is not abstract or derived from &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WES_OUTBOUND049 - Class &1 is not abstract or derived from &2 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WES_OUTBOUND049 Class &1 is not abstract or derived from &2
  
  Meaning / Cause:
  This error occurs in the context of SAP PI/PO (Process Integration / Process Orchestration) or SAP middleware when dealing with outbound proxy or adapter communication.
  
  The message indicates that a class (represented by placeholder &1) is expected to be either abstract or derived from another class (represented by &2), but it is not.
  Typically, this happens during runtime when the system tries to instantiate or use a class for outbound processing, but the class does not meet the inheritance or abstraction requirements.
  This can be caused by:
  
  Incorrect or missing implementation of the class.
  The class assigned in the configuration is not the correct one.
  A mismatch between the expected interface/class and the actual class used.
  Custom adapter modules or user-defined classes that do not follow the required inheritance structure.
  
  
  
  
  Where it occurs:
  
  In SAP PI/PO during outbound message processing.
  When using adapter modules or custom Java classes for outbound communication.
  When the system tries to instantiate a class for outbound processing but the class does not conform to the expected type hierarchy.
  
  
  Solution / How to fix:
  
  
  Check the class assignment:
  
  Verify the class name assigned in the communication channel or adapter module.
  Ensure that the class &1 is the correct implementation class.
  
  
  
  Check class inheritance:
  
  The class &1 must be either:
  
  An abstract class, or
  Derived (subclass) from the class &2.
  
  
  Use the Java development environment or SAP NetWeaver Developer Studio to check the class hierarchy.
  
  
  
  Correct the class implementation:
  
  If you have custom classes, ensure they extend the required base class (&2).
  If the class is not abstract but should be, modify it accordingly.
  Recompile and redeploy the class if necessary.
  
  
  
  Check adapter module configuration:
  
  If the error occurs in an adapter module, verify the module configuration.
  Make sure the module class is correctly specified and deployed.
  
  
  
  Check for transport or deployment issues:
  
  Sometimes, the class might not be properly deployed or the wrong version is active.
  Redeploy the relevant Java archive (JAR) or adapter module.
  
  
  
  Consult SAP Notes:
  
  Search SAP Support Portal for notes related to WES_OUTBOUND049 for any patches or known issues.
  
  
  
  
  Additional Information:
  
  
  Example:
  
  Suppose the error message is:
  
  WES_OUTBOUND049 Class com.example.MyOutboundClass is not abstract or derived from com.sap.aii.adapter.soap.api.OutboundHandler
  
  This means MyOutboundClass must extend OutboundHandler or be abstract.
  
  
  Context:
  
  This error is common when developing custom adapter modules or outbound handlers in SAP PI/PO.
  
  
  Debugging tips:  
  
  Use SAP NetWeaver Developer Studio to inspect the class hierarchy.
  Check the communication channel or integration flow configuration.
  Review the Java stack trace for more details.
  
  
  
  
  If you provide the exact class names (&1 and &2), I can help you with more specific guidance.
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Class &1 does not extend or is not abstract as required by class &2.
  
  
  Solution
  Ensure &1 is abstract or inherits from &2; correct class implementation and config.
  
  
  Where
  SAP PI/PO outbound processing, adapter modules, custom Java classes.
  
  
  Related Info
  Check class hierarchy, adapter module config, deployment, SAP Notes for patches.
  
  
  
  
  Let me know if you want help with a specific scenario or class names!