How To Fix CNV_NCE_BAS110 - 1:1 and NR mapping values for &1 and &2 result in duplicates (number &3)

CNV_NCE_BAS110 - Overview

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 110

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

What causes this issue?

You have specified a one-to-one mapping value for the source number. The
target number is already mapped to the different source number with a
number range interval mapping. These mappings are not acceptable as they
will result in duplicate numbers during the conversion.

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 target number of the one-to-one mapping or correct mapping
for the conflicting number range interval.
&FURTHER_HINTS&
Information about conflicting number range intervals is generally given
in the following form:
<source subobject value>/<source number range number>/<(>
<<)>source to-year>.
Since temporary number intervals could exist without the 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
form:
<source subobject value>/<first number of the source number
interval>/<source to-year>.
Information about the one-to-one mapping is given in the form:
<source subobject value>/<source number>/<source
fiscal year>.

Error message extract from SAP system. Copyright SAP SE.

CNV_NCE_BAS110 - Details

• The SAP error message CNV_NCE_BAS110 typically occurs during data migration or conversion processes, particularly when using SAP's Data Migration tools or during the execution of a conversion program. This specific error indicates that there are duplicate mapping values for the specified fields, which can lead to inconsistencies in the data being processed.
  
  Cause:
  The error message "1:1 and NR mapping values for &1 and &2 result in duplicates (number &3)" suggests that:
  
  There are two fields (denoted as &1 and &2) that are expected to have a one-to-one (1:1) mapping, but the data being processed has multiple entries for the same value.
  The "number &3" indicates how many duplicates were found for the mapping values.
  
  This situation can arise due to:
  
  Incorrect or incomplete data in the source system.
  Misconfiguration in the mapping settings.
  Data integrity issues where the same key is being used for multiple records.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify Duplicates:
  
  Analyze the