How To Fix CNV20201055 - Mapping table was maintained incorrectly for: &1, &2, &3, &4

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 055

• Message text: Mapping table was maintained incorrectly for: &1, &2, &3, &4

What causes this issue?

The maintenance table CNVRNMB is maintained incorrectly for the
following:
&V1&,
&V2&,
&V3&,
&V4&
For FIAA-BELNR, CNVRNMB-NRRANGENR must contain the value 01 or 02.
For all other number range objects, CNVRNMB-NRRANGENR must be empty.

System Response

Error

How to fix this error?

Correct the mapping table CNVRNMB accordingly.

Procedure for System Administrators

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201055 - Mapping table was maintained incorrectly for: &1, &2, &3, &4 ?

  The SAP error message CNV20201055 indicates that there is an issue with the mapping table used in a data migration or conversion process. This error typically arises during the execution of a data migration project, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error message CNV20201055 suggests that the mapping table has been maintained incorrectly for the specified fields (represented by &1, &2, &3, &4). This could be due to several reasons:
  
  Incorrect Mapping Entries: The entries in the mapping table may not correspond correctly to the source and target fields.
  Missing Entries: Required entries in the mapping table may be missing, leading to incomplete or incorrect data mapping.
  Data Type Mismatch: The data types of the source and target fields may not match, causing issues during the mapping process.
  Configuration Errors: There may be configuration errors in the migration settings or parameters that affect how the mapping is processed.
  
  Solution:
  To resolve the CNV20201055 error, you can follow these steps:
  
  Review Mapping Table: Check the mapping table for the specified fields. Ensure that all necessary entries are present and correctly configured.
  Correct Entries: If you find any incorrect or missing entries, update the mapping table accordingly. Make sure that the source and target fields are correctly aligned.
  Check Data Types: Verify that the data types of the source and target fields are compatible. If there are mismatches, adjust the mapping or the data types as necessary.
  Consult Documentation: Refer to the SAP documentation or migration guides related to the specific migration project you are working on. This can provide insights into the correct configuration and mapping requirements.
  Test Migration: After making corrections, perform a test migration to ensure that the changes resolve the error and that data is being mapped correctly.
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with a technical expert who specializes in SAP migrations.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on mapping issues.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide specific instructions on how to set up and maintain mapping tables.
  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 correct the issues causing the CNV20201055 error in your SAP migration process.