How To Fix CNV_20900020 - Mapping maintenance ignored for vendor numbers

CNV_20900020 - Overview

• Message type: E = Error

• Message class: CNV_20900 - Message class for package CNV_20900

• Message number: 020

• Message text: Mapping maintenance ignored for vendor numbers

What causes this issue?

In the activity Specify Mapping Values you have ignored the mapping
maintenance. This means you want to convert the vendor 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.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

CNV_20900020 - Details

• The SAP error message CNV_20900020 typically occurs during data migration processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the mapping maintenance for vendor numbers is being ignored, which can happen for several reasons.
  
  Cause:
  
  
  Missing Mapping Entries: The error may arise if there are no mapping entries defined for the vendor numbers in the migration cockpit. This means that the system cannot find a corresponding entry for the vendor numbers being processed.
  
  
  Incorrect Configuration: If the configuration settings for the migration process are not set up correctly, it can lead to this error. This includes issues with the mapping tables or the data source.
  
  
  Data Format Issues: The vendor numbers being imported may not match the expected format or structure, leading to the system ignoring the mapping.
  
  
  Incompatibility with Migration Objects: The vendor numbers may not be compatible with the migration objects defined in the migration cockpit.
  
  
  
  Solution:
  
  
  Check