How To Fix CNV_21527001 - Mapping not maintained for renaming logical system

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_21527 - Logical System Rename

• Message number: 001

• Message text: Mapping not maintained for renaming logical system

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_21527001 - Mapping not maintained for renaming logical system ?

  The SAP error message CNV_21527001 indicates that there is a mapping issue related to the renaming of a logical system in the context of a data migration or system conversion process. This error typically arises during the execution of a conversion or migration project, particularly when using SAP's tools for data migration, such as the SAP S/4HANA Migration Cockpit or other conversion tools.
  Cause:
  The error occurs when the system cannot find a mapping for the logical system that is being renamed. This can happen due to several reasons:
  
  Missing Mapping Entries: The mapping for the logical system has not been defined in the relevant configuration tables.
  Incorrect Configuration: The configuration for the logical system renaming might be incorrect or incomplete.
  Data Migration Tool Issues: There may be issues with the data migration tool or the specific migration project settings.
  
  Solution:
  To resolve the error CNV_21527001, you can follow these steps:
  
  
  Check Mapping Configuration:
  
  Go to the relevant transaction or configuration area where logical system mappings are maintained (e.g., transaction SIMG or specific configuration transactions for your migration tool).
  Ensure that there is a mapping entry for the logical system that you are trying to rename.
  
  
  
  Maintain Missing Mappings:
  
  If the mapping is missing, create a new entry for the logical system in the mapping table. This typically involves specifying the old logical system name and the new logical system name.
  
  
  
  Review Migration Settings:
  
  Check the settings of your migration project to ensure that all necessary configurations are in place. This includes verifying that the logical system names are correctly defined in the project settings.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation for the specific migration tool you are using. This documentation often provides detailed steps on how to configure logical system mappings.
  
  
  
  Check for Notes and Updates:
  
  Look for any SAP Notes or updates related to the migration tool you are using. Sometimes, SAP releases patches or notes that address specific issues or provide guidance on common errors.
  
  
  
  Testing:
  
  After making the necessary changes, re-run the migration process to see if the error persists.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Documentation: Review the SAP Help Portal for detailed documentation on the migration process and logical system configuration.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the steps you have already taken.