How To Fix CNV_20800020 - Mapping maintenance ignored for customer numbers

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 020

• Message text: Mapping maintenance ignored for customer numbers

What causes this issue?

In the activity Specify Mapping Values you have ignored the mapping
maintenance. This means you want to convert the customer numbers only
based on number range intervals.

How to fix this error?

If you want to maintain the mapping, re-execute the activity Specify
Mapping Values and maintain the mapping accordingly.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20800020 - Mapping maintenance ignored for customer numbers ?

  The SAP error message CNV_20800020 indicates that there is an issue with the mapping maintenance for customer numbers during a data migration or conversion process. This error typically arises in the context of SAP's data migration tools, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error message CNV_20800020 can occur due to several reasons, including:
  
  
  Missing Mapping Entries: The mapping for customer numbers may not have been defined or is incomplete. This means that the system cannot find a corresponding entry for the customer numbers being processed.
  
  
  Incorrect Configuration: There may be issues with the configuration settings in the migration tool, leading to the system ignoring the mapping maintenance.
  
  
  Data Integrity Issues: The source data may have inconsistencies or errors that prevent proper mapping.
  
  
  Technical Issues: There could be underlying technical issues, such as database locks or connectivity problems, that affect the mapping process.
  
  
  Solution:
  To resolve the error CNV_20800020, you can take the following steps:
  
  
  Check Mapping Entries:
  
  Verify that all necessary mapping entries for customer numbers are correctly defined in the mapping table.
  Ensure that the source and target customer numbers are correctly aligned.
  
  
  
  Review Configuration:
  
  Check the configuration settings of the migration tool to ensure that they are set up correctly for the mapping process.
  Make sure that the relevant migration objects are activated and properly configured.
  
  
  
  Data Validation:
  
  Validate the source data for any inconsistencies or errors that may affect the mapping.
  Clean up any duplicate or invalid customer numbers in the source data.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or notes related to the specific migration tool you are using for any additional troubleshooting steps or known issues.
  
  
  
  Check Logs:
  
  Review the logs generated during the migration process for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after performing the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error and the steps you have already taken.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on mapping issues.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific migration tool you are using for best practices and troubleshooting tips.
  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 identify and resolve the cause of the error message CNV_20800020 effectively.