How To Fix CNV_21526001 - Mapping not maintained for renaming client

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_21526 - Client Rename

• Message number: 001

• Message text: Mapping not maintained for renaming client

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_21526001 - Mapping not maintained for renaming client ?

  The SAP error message CNV_21526001 indicates that there is a mapping issue related to the renaming of a client in the SAP system. This error typically arises during data migration or client copy processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools.
  Cause:
  The error occurs when the system attempts to rename a client, but there is no mapping defined for the client in the relevant configuration. This can happen if:
  
  The client renaming process is not properly configured.
  The mapping table for client renaming is missing or incomplete.
  There are inconsistencies in the configuration settings related to client management.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Mapping Configuration:
  
  Go to the transaction code SE11 (Data Dictionary) and check the relevant mapping table for client renaming. Ensure that the necessary entries exist for the client you are trying to rename.
  
  
  
  Maintain Mapping:
  
  If the mapping is missing, you will need to create or maintain the mapping for the client renaming. This can typically be done in the configuration settings of the data migration tool you are using (e.g., SAP S/4HANA Migration Cockpit, SLT).
  
  
  
  Review Documentation:
  
  Consult the SAP documentation or notes related to client renaming and data migration. There may be specific instructions or prerequisites that need to be followed.
  
  
  
  Check for Custom Code:
  
  If there are any custom developments or enhancements in your SAP system, ensure that they are not interfering with the client renaming process.
  
  
  
  Consult SAP Support:
  
  If the issue persists after checking the mapping and configuration, consider reaching out to SAP Support for further assistance. They may provide additional insights or patches that could resolve the issue.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE11: Data Dictionary
  SE80: Object Navigator
  SCCL: Client Copy
  SCC3: Client Export
  SCC4: Client Administration
  
  
  
  SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide guidance on client renaming and mapping.
  
  
  
  Best Practices:
  
  Always back up your data before performing client renaming or migration tasks.
  Test the renaming process in a development or quality assurance environment before applying it to production.
  
  
  
  By following these steps, you should be able to identify and resolve the issue related to the CNV_21526001 error message.