How To Fix CNV_NCE_BAS108 - NR mapping values for &1 and &2 result in duplicates (number &3)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 108

• Message text: NR mapping values for &1 and &2 result in duplicates (number &3)

What causes this issue?

Source numbers that belong to the different NR intervals are mapped to
the same target numbers. These mappings are not acceptable since they
will result in duplicate numbers during conversion. You can find an
example of the duplicate values in the message text.

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?

Correct mappings for the conflicting NR intervals so that they do not
result in duplicate numbers.
&FURTHER_HINTS&
Information about conflicting NR intervals is generally given in the
following form:
<source subobject value>/<source number range number>/<(>
<<)>source to-year>.
Since there could exist the temporary number intervals without
corresponding number range numbers (they are built from the values that
do not belong to any number range interval), the information about them
comes in the other form:
<source subobject value>/<first number of the source number
interval>/<source to-year>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_NCE_BAS108 - NR mapping values for &1 and &2 result in duplicates (number &3) ?

  The SAP error message CNV_NCE_BAS108 indicates that there are duplicate mapping values in the context of a data conversion or migration process. This error typically arises during the execution of a conversion program, particularly when mapping values from one system to another, such as during a system upgrade or data migration.
  
  Cause:
  The error message specifies that there are duplicate entries for the mapping values associated with the specified fields (&1 and &2). The number of duplicates is indicated by &3. This situation can occur due to several reasons:
  
  Data Quality Issues: The source data may contain duplicates that were not identified or cleaned up prior to the migration.
  Mapping Configuration: The mapping configuration may not be set up correctly, leading to multiple source values being mapped to the same target value.
  Incorrect Transformation Logic: The transformation logic applied during the mapping process may inadvertently create duplicates.
  
  
  Solution:
  To resolve this error, you can take the following