How To Fix /BOBF/CONF128 - Different mapper classes for nodes with same proxy node name &1 found

SAP Error Message - Details

• Message type: E = Error

• Message class: /BOBF/CONF -

• Message number: 128

• Message text: Different mapper classes for nodes with same proxy node name &1 found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /BOBF/CONF128 - Different mapper classes for nodes with same proxy node name &1 found ?

  The SAP error message /BOBF/CONF128 indicates that there are multiple mapper classes defined for nodes that share the same proxy node name in the Business Object Processing Framework (BOPF). This situation can lead to ambiguity in the system, as the framework cannot determine which mapper class to use for the specified node.
  Cause:
  The error typically arises from one of the following scenarios:
  
  Duplicate Configuration: There are multiple entries in the configuration for the same node name, leading to conflicting mapper classes.
  Incorrect Customization: Custom developments or modifications may have inadvertently created multiple mapper classes for the same node.
  Transport Issues: If changes were transported from one system to another, it might have led to inconsistencies in the configuration.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Nodes: Determine which nodes are causing the conflict. The error message will usually indicate the specific node name (represented by &1).
  
  
  Check Configuration:
  
  Go to the BOPF configuration in the SAP system (transaction code BOPF).
  Navigate to the relevant business object and check the configuration for the nodes.
  Look for multiple mapper classes assigned to the same node.
  
  
  
  Remove Duplicates:
  
  If you find multiple mapper classes for the same node, decide which one is the correct or intended mapper class.
  Remove or deactivate the unnecessary or incorrect mapper classes.
  
  
  
  Adjust Custom Code: If the issue is due to custom developments, review the custom code to ensure that only one mapper class is defined for each node.
  
  
  Transport Consistency: If the issue arose after a transport, ensure that the transport request was correctly imported and that there are no inconsistencies between the development and production systems.
  
  
  Testing: After making the necessary changes, test the business object to ensure that the error is resolved and that the functionality works as expected.
  
  
  Related Information:
  
  BOPF Documentation: Familiarize yourself with the BOPF framework and its configuration options. SAP provides documentation that can help you understand how to properly configure business objects and their nodes.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on BOPF configuration.
  Debugging: If the issue persists, consider using debugging tools to trace the execution and identify where the conflict arises.
  
  By following these steps, you should be able to resolve the /BOBF/CONF128 error and ensure that your BOPF configuration is correct and consistent.