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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201418 - Overlap of number ranges: &1, target subobj./to-year=&2 ?

  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 occur.
  
  Solution:
  To resolve the CNV20201418 error, you can take the following steps:
  
  
  Check Number Ranges: Review the number ranges defined for the target sub-object in the target system. Ensure that there are no overlaps with existing ranges.
  
  Use transaction code SNRO to check the number range objects and their configurations.
  
  
  
  Adjust Number Ranges: If overlaps are found, you may need to adjust the number ranges:
  
  Create new number ranges that do not overlap with existing ones.
  Modify the existing number ranges to eliminate the overlap.
  
  
  
  Review Migration Settings: Ensure that the migration settings are correctly configured to avoid conflicts. This includes checking the mapping of source data to target structures.
  
  
  Test Migration: After making adjustments, perform a test migration to ensure that the error does not occur again.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration process you are using, as there may be additional guidelines or best practices.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who specializes in data migration.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SNRO (Number Range Objects) and SCC1 (Client Copy) if applicable.
  SAP Notes: Check for any SAP Notes related to the specific error message or the migration process you are using.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, review the documentation for specific guidelines on handling number ranges during migration.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV20201418 error effectively.