How To Fix CNVA_20400_CHECK090 - An implicit merge into a controlling area was detected.

CNVA_20400_CHECK090 - Overview

• Message type: E = Error

• Message class: CNVA_20400_CHECK - Messages for contorlling areas checks

• Message number: 090

• Message text: An implicit merge into a controlling area was detected.

An implicit merge into a controlling area was detected. This happens
when controlling areas will be merged, but the mapping only contains a
part of the source controlling areas. To avoid unwanted merges, you must
specify mapping values for all the source values of the target
controlling area. The affected target controlling areas are stored in
the output table of the duplicate master data check.

Error message extract from SAP system. Copyright SAP SE.

CNVA_20400_CHECK090 - Details

• The SAP error message CNVA_20400_CHECK090 indicates that an implicit merge into a controlling area has been detected. This typically occurs during the process of data migration or when working with controlling area settings in SAP. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Implicit Merge: The error suggests that there is an attempt to merge data from different controlling areas without explicit instructions. This can happen if the system detects that the same cost center or internal order is being assigned to multiple controlling areas.
  
  Configuration Issues: There may be inconsistencies in the configuration of controlling areas, such as overlapping settings or incorrect assignments.
  Data Migration: If you are migrating data from one system to another, the data may not be correctly aligned with the controlling area settings in the target system.
  
  
  Solution:
  
  
  Check Controlling Area Assignments:
  
  Review the assignments of cost centers, internal orders, and other objects to ensure they are correctly