How To Fix CNV_PE645 - IFMAP_READ &1 has more than one parameter mapping

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 645

• Message text: IFMAP_READ &1 has more than one parameter mapping

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE645 - IFMAP_READ &1 has more than one parameter mapping ?

  The SAP error message "CNV_PE645 IFMAP_READ &1 has more than one parameter mapping" typically occurs during the execution of a data migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with the mapping of parameters in the interface mapping (IFMAP) for a specific object or data structure.
  Cause:
  The error is caused by the presence of multiple parameter mappings for a single parameter in the interface mapping. This can happen due to:
  
  Duplicate Entries: There may be duplicate entries in the mapping configuration for the same parameter.
  Incorrect Configuration: The mapping might have been incorrectly set up, leading to multiple mappings for the same parameter.
  Data Model Changes: Changes in the data model or structure that were not reflected in the mapping configuration.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Mapping Configuration:
  
  Go to the transaction or tool where the mapping is defined (e.g., the Migration Cockpit).
  Review the mapping for the specific object indicated by &1 in the error message.
  Look for any duplicate mappings for the same parameter and remove or correct them.
  
  
  
  Adjust Parameter Mappings:
  
  Ensure that each parameter has a unique mapping. If multiple mappings are necessary, consider whether they can be consolidated or if the logic can be adjusted to avoid conflicts.
  
  
  
  Test the Configuration:
  
  After making changes, test the mapping configuration to ensure that the error no longer occurs.
  Run a small subset of data to verify that the mappings work as expected.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration or conversion process you are using. There may be specific guidelines or known issues related to the error.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific environment and configuration.
  
  
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes (like LTMC for Migration Cockpit) to access the mapping configurations.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Migration Cockpit: Familiarize yourself with the Migration Cockpit and its functionalities, as it is a common tool for data migration in SAP S/4HANA.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV_PE645 error in your SAP environment.