How To Fix CNV_10020428 - Specific subprogram &1(&2) does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 428

• Message text: Specific subprogram &1(&2) does not exist

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020428 - Specific subprogram &1(&2) does not exist ?

  The SAP error message CNV_10020428 indicates that a specific subprogram (function module or method) referenced in the conversion process does not exist. This error typically arises during data migration or conversion activities, particularly when using SAP's Data Migration tools or during system upgrades.
  Cause:
  
  
  Missing Function Module/Method: The specified subprogram (function module or method) is not available in the system. This could be due to:
  
  The function module was not activated or was deleted.
  The function module is part of a package that has not been imported or is not available in the current system.
  The function module is part of a custom development that has not been transported to the system.
  
  
  
  Incorrect Configuration: The configuration settings may point to a non-existent or incorrectly named subprogram.
  
  
  Version Mismatch: If you are migrating data from an older version of SAP to a newer one, there may be changes in the function modules or methods that are no longer compatible.
  
  
  Solution:
  
  
  Check for Existence: Verify if the specified subprogram exists in the system. You can do this by:
  
  Using transaction code SE37 (for function modules) or SE80 (for classes and methods) to search for the subprogram.
  If it does not exist, you may need to create it or transport it from another system.
  
  
  
  Activate the Function Module: If the function module exists but is not activated, activate it using transaction SE37.
  
  
  Review Configuration: Check the configuration settings in the relevant transaction or program to ensure that the correct subprogram is being referenced.
  
  
  Transport Missing Objects: If the function module is part of a custom development, ensure that it has been transported correctly to the target system.
  
  
  Consult Documentation: Review the documentation for the migration or conversion process you are using to ensure that you are following the correct steps and that all required components are in place.
  
  
  Check SAP Notes: Look for any relevant SAP Notes that may address this specific error or provide guidance on the migration process.
  
  
  Contact SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP Support for assistance.
  
  
  Related Information:
  
  Transaction Codes: SE37 (Function Module), SE80 (Object Navigator), SE11 (Data Dictionary), SE24 (Class Builder).
  SAP Notes: Search for SAP Notes related to your specific version and the migration tool you are using.
  Documentation: Review the SAP Help Portal for documentation on data migration and conversion processes.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.