How To Fix CNV_PE_POST129 - No undo transfer method assigned to transfer method

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_POST -

• Message number: 129

• Message text: No undo transfer method assigned to transfer method

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_POST129 - No undo transfer method assigned to transfer method ?

  The SAP error message CNV_PE_POST129 indicates that there is no undo transfer method assigned to a transfer method in the context of a data migration or conversion process. This error typically arises during the execution of a data transfer or conversion program, particularly in scenarios involving the SAP Landscape Transformation (SLT) or other data migration tools.
  Cause:
  The error occurs when the system expects an undo transfer method to be defined for a specific transfer method, but it is not found. This can happen due to:
  
  Configuration Issues: The transfer method may not have been properly configured in the system.
  Missing Customization: The necessary customization for the transfer method may not have been completed.
  Data Migration Settings: The settings for the data migration process may be incomplete or incorrect.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Transfer Method Configuration:
  
  Go to the relevant configuration settings for the transfer method in the SAP system.
  Ensure that an undo transfer method is assigned to the transfer method in question.
  
  
  
  Assign Undo Transfer Method:
  
  If an undo transfer method is not assigned, you will need to create or assign one. This can typically be done in the customizing settings of the data migration tool you are using (e.g., SAP Data Services, SLT).
  Navigate to the relevant transaction (e.g., SPRO) and look for the settings related to the transfer methods.
  
  
  
  Review Documentation:
  
  Check the SAP documentation or notes related to the specific data migration tool you are using. There may be specific instructions or prerequisites that need to be followed.
  
  
  
  Consult with Technical Team:
  
  If you are unsure about the configuration or how to assign the undo transfer method, consult with your SAP Basis or technical team. They may have insights or access to the necessary configuration settings.
  
  
  
  Testing:
  
  After making the necessary changes, test the data transfer process again to ensure that the error has been resolved.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Transaction Codes: Familiarize yourself with transaction codes related to data migration and transfer methods, such as SLT, LTMOM, or others depending on your specific scenario.
  Community Forums: Consider searching or posting in SAP community forums or support channels for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV_PE_POST129 error in your SAP environment.