How To Fix CNV20201418 - Overlap of number ranges: &1, target subobj./to-year=&2

CNV20201418 - Overview

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 418

• Message text: Overlap of number ranges: &1, target subobj./to-year=&2

What causes this issue?

Overlap of number ranges:
&V1&, target subobject/to-year = &V2&
Number range 1 (source subobj./NoRgNo/MinNo(new)/MaxNo(new) =
&V3&
Number range2 (source subobj./NoRgNo/MinNo(new)/MaxNo(new) =
&V4&
The interval that is created by the new min. no. and the new max. no.
overlaps with the interval of another number range.
As a rule, different number ranges must have disjoint number intervals.
NoRgNo: 2-digit number range number
Min-Nr: From-number of the interval
Max-Nr: highest assigned number in the interval

System Response

Warning

How to fix this error?

This is a plausibility check. It shows possible inconsistencies in the
conversion logic.
Check if the conversion logic is correct and meets the requirements.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

CNV20201418 - Details

• The SAP error message CNV20201418 indicates that there is an overlap in number ranges for a specific target sub-object and year during a data migration or conversion process. This error typically arises in the context of SAP data migration projects, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  
  Cause:
  The error occurs when the system detects that the number ranges defined for the target sub-object (e.g., a specific document type or entity) overlap with existing number ranges for the same object in the specified target year. This can happen due to:
  
  Duplicate Number Ranges: The number ranges defined for the target sub-object may overlap with those already in use.
  Incorrect Configuration: The configuration of number ranges may not have been set up correctly, leading to conflicts.
  Data Migration Issues: During data migration, if the source data contains values that fall within the existing number ranges of the target system, this error can