How To Fix CNV_NCE_BAS431 - Non-shifting mapping exists for the target interval

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 431

• Message text: Non-shifting mapping exists for the target interval

What causes this issue?

Number range ( &V1& / &V2& / &V3& / &V4& ) is used as target number
range in the conversion rule <ZK>Shifting Mode</>. This means that it
cannot be used in any other conversion rules.

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?

Return to the <ZK>Mapping Values for Number Range Intervals</> tab page,
and correct the target number range intervals.

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_BAS431 - Non-shifting mapping exists for the target interval ?

  The SAP error message CNV_NCE_BAS431 indicates that there is a non-shifting mapping issue in the context of data conversion or migration, particularly when using the SAP Data Migration Cockpit or similar tools. This error typically arises during the mapping of source data to target structures, where the system expects a certain type of mapping that allows for shifting (i.e., moving data from one position to another) but finds that a non-shifting mapping has been defined for the target interval.
  Cause:
  
  Mapping Configuration: The error usually occurs when the mapping configuration for the target interval does not allow for shifting. This can happen if the source and target structures are not aligned correctly or if the mapping rules are incorrectly defined.
  Data Structure Changes: If there have been changes in the data structure (e.g., fields added or removed) that affect how data should be mapped, this can lead to conflicts in the mapping process.
  Incompatible Data Types: If the data types between the source and target fields are incompatible, it may prevent the system from performing the necessary shifting.
  
  Solution:
  
  Review Mapping Configuration: Check the mapping configuration for the target interval. Ensure that the mapping is set up correctly and that it allows for shifting where necessary.
  Adjust Data Structures: If there have been changes to the data structures, ensure that the source and target structures are aligned. You may need to adjust the mapping to accommodate any changes.
  Check Data Types: Verify that the data types of the source and target fields are compatible. If there are discrepancies, you may need to modify the mapping or the data types to ensure compatibility.
  Consult Documentation: Refer to the SAP documentation for the specific data migration tool you are using. There may be specific guidelines or best practices for setting up mappings that can help resolve the issue.
  Testing: After making adjustments, perform a test run of the data migration to ensure that the error has been resolved and that data is being mapped correctly.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on mapping issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Data Migration Cockpit: Familiarize yourself with the features and limitations of the SAP Data Migration Cockpit, as understanding its capabilities can help in troubleshooting mapping issues.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.