How To Fix /SCWM/MIGRATION_CUST053 - There are non-unique keys defined in some of the mapping tables

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/MIGRATION_CUST -

• Message number: 053

• Message text: There are non-unique keys defined in some of the mapping tables

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/MIGRATION_CUST053 - There are non-unique keys defined in some of the mapping tables ?

  The SAP error message /SCWM/MIGRATION_CUST053 indicates that there are non-unique keys defined in some of the mapping tables during a migration process in the SAP Extended Warehouse Management (EWM) module. This error typically arises when the system encounters duplicate entries in the mapping tables that are supposed to have unique keys.
  Cause:
  
  Duplicate Entries: The primary cause of this error is the presence of duplicate entries in the mapping tables. These tables are expected to have unique keys for proper data migration and mapping.
  Data Integrity Issues: There may be issues with the data integrity in the source system, leading to duplicates being carried over to the mapping tables.
  Configuration Errors: Incorrect configuration or setup of the mapping tables can also lead to non-unique keys.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify Duplicate Entries:
  
  Use SQL queries or SAP transaction codes to check the mapping tables for duplicate entries. You can use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to view the contents of the mapping tables.
  Look for the specific mapping tables mentioned in the error message.
  
  
  
  Remove or Correct Duplicates:
  
  Once you identify the duplicates, you need to decide whether to remove or correct them. This may involve:
  
  Deleting the duplicate entries if they are not needed.
  Merging the data if the duplicates contain different information that needs to be preserved.
  Correcting the keys to ensure they are unique.
  
  
  
  
  
  Re-run the Migration:
  
  After resolving the duplicates, re-run the migration process to see if the error persists.
  
  
  
  Check Configuration:
  
  Review the configuration settings for the mapping tables to ensure they are set up correctly and that there are no issues that could lead to duplicates in the future.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration process you are performing. There may be additional guidelines or best practices to follow.
  
  
  
  Seek SAP Support:
  
  If the issue persists or if you are unsure about how to proceed, consider reaching out to SAP support for assistance. They can provide guidance based on the specific context of your system and migration.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Guides: Review the official SAP migration guides for EWM, as they may contain information on common issues and their resolutions.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to resolve the /SCWM/MIGRATION_CUST053 error and successfully complete your migration process.