How To Fix CNV_20800189 - Mapping entries not maintained for validation

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 189

• Message text: Mapping entries not maintained for validation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20800189 - Mapping entries not maintained for validation ?

  The SAP error message CNV_20800189 indicates that there are missing mapping entries for a validation process in a data conversion or migration scenario. This error typically arises during the execution of a data migration project, particularly when using SAP's Conversion Tools or during the use of the SAP S/4HANA Migration Cockpit.
  Cause:
  The error occurs when the system attempts to validate data but cannot find the necessary mapping entries in the relevant tables. This can happen due to several reasons:
  
  Incomplete Mapping Configuration: The mapping entries required for the validation process have not been defined or are incomplete.
  Missing Customization: If the migration or conversion process involves custom fields or tables, the necessary mappings for these custom elements may not have been created.
  Incorrect Data Source: The data source being used for the migration may not have the expected structure or content, leading to missing mappings.
  Version Mismatch: If there are discrepancies between the versions of the source and target systems, it may lead to missing mappings.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Mapping Entries:
  
  Go to the relevant transaction or tool where the mapping is defined (e.g., LTMC for Migration Cockpit).
  Verify that all necessary mapping entries are created and correctly configured.
  
  
  
  Maintain Missing Mappings:
  
  If you identify missing mappings, create the necessary entries in the mapping tables. This may involve defining how source fields map to target fields.
  
  
  
  Review Customizations:
  
  If your migration involves custom fields or tables, ensure that you have created the appropriate mappings for these elements.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or guides related to the specific migration or conversion tool you are using. This may provide insights into required mappings.
  
  
  
  Test with Sample Data:
  
  Run a test migration with a small set of data to identify any further issues with mappings before executing a full migration.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who specializes in data migration.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LTMC (for Migration Cockpit) or other tools used for data migration.
  SAP Notes: Check for any SAP Notes related to the specific error message or the migration tool you are using. SAP Notes often contain fixes or workarounds for known issues.
  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 CNV_20800189 error message effectively.