How To Fix CNV_NCE_BAS169 - Number &1: one-to-one and NR mappings have different target intervals

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 169

• Message text: Number &1: one-to-one and NR mappings have different target intervals

What causes this issue?

You have created a one-to-one mapping for the number that belongs to a
certain number range interval. There exists a number range mapping for
this interval and the target number of the one-to-one mapping does not
belong to the target interval of the number range mapping.

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?

Change the boundaries of the target interval from the number range
mapping so that the target number of the one-to-one mapping fits into
it, or choose another target number for the corresponding source number.

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_BAS169 - Number &1: one-to-one and NR mappings have different target intervals ?

  The SAP error message CNV_NCE_BAS169 indicates that there is a conflict in the mapping configuration for a conversion project, specifically regarding the target intervals for one-to-one mappings and non-redundant (NR) mappings. This error typically arises during data migration or conversion processes, particularly when using SAP's data migration tools.
  Cause:
  The error occurs when:
  
  You have defined a one-to-one mapping for a certain data element, which specifies a specific target interval.
  At the same time, there is a non-redundant mapping (NR mapping) for the same data element that specifies a different target interval.
  The system detects that these two mappings cannot coexist because they are trying to map the same source value to different target values or ranges.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Mappings: Check the mappings defined in your conversion project. Look for the specific data element mentioned in the error message (indicated by &1).
  
  
  Identify Conflicts: Identify the one-to-one mapping and the NR mapping for the same data element. Compare their target intervals to see where the conflict lies.
  
  
  Adjust Mappings:
  
  If the one-to-one mapping is correct and should take precedence, consider removing or adjusting the NR mapping to ensure that it does not conflict with the one-to-one mapping.
  Conversely, if the NR mapping is the correct one, you may need to modify or remove the one-to-one mapping.
  
  
  
  Test Changes: After making adjustments, run the mapping process again to see if the error persists.
  
  
  Documentation: Ensure that you document any changes made to the mappings for future reference and to maintain clarity in the conversion project.
  
  
  Related Information:
  
  Mapping Types: Understand the difference between one-to-one mappings and NR mappings. One-to-one mappings are straightforward, while NR mappings can handle multiple source values mapping to a single target value.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional context or updates regarding this error.
  Data Migration Tools: Familiarize yourself with the specific SAP data migration tools you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) as they may have specific guidelines or best practices for handling mappings.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with a specialist who has experience with SAP data migration projects.