How To Fix CNV_NCE_BAS451 - One-to-one mappings for object will not be processed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 451

• Message text: One-to-one mappings for object will not be processed

What causes this issue?

Object interval was selected for <zk>Not to be converted</>.
But there is at least one mapping value (old number, new number) defined
in the One-to-One Mapping screen. This mapping will not be considered
with the current settings.

System Response

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

How to fix this error?

Check one-to-one mapping values for relevance. Then either change rule
accordingly or remove irrelevant one-to-one mapping values.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_NCE_BAS451 - One-to-one mappings for object will not be processed ?

  The SAP error message CNV_NCE_BAS451 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there are one-to-one mappings for a specific object that will not be processed, which can hinder the data migration process.
  Cause:
  The error can be caused by several factors, including:
  
  Missing Mapping Entries: The mapping for the object in question may not be defined correctly or may be missing entirely.
  Inconsistent Data: The data being migrated may not conform to the expected format or structure, leading to issues in mapping.
  Configuration Issues: There may be configuration settings in the migration tool that are not set up correctly, preventing the processing of one-to-one mappings.
  Data Model Changes: If there have been changes in the data model between the source and target systems, this can lead to discrepancies in how data is mapped.
  
  Solution:
  To resolve the CNV_NCE_BAS451 error, you can take the following steps:
  
  
  Check Mapping Configuration:
  
  Review the mapping configuration for the object in question. Ensure that all necessary one-to-one mappings are defined correctly.
  If mappings are missing, add the required entries.
  
  
  
  Validate Data:
  
  Ensure that the data being migrated is clean and conforms to the expected format. Look for any inconsistencies or errors in the source data that could cause mapping issues.
  
  
  
  Review Migration Settings:
  
  Check the settings in the migration tool to ensure that they are configured correctly for the specific object you are trying to migrate.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the migration tool you are using. There may be specific guidelines or prerequisites for the object that you need to follow.
  
  
  
  Test with Sample Data:
  
  If possible, test the migration process with a smaller set of sample data to identify if the issue persists. This can help isolate the problem.
  
  
  
  Seek Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, as it may contain specific information about handling mapping errors.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify the cause of the CNV_NCE_BAS451 error and implement a solution to successfully process the one-to-one mappings for the object in question.