How To Fix CNV_20400_CHECK055 - Reference CO area &1 needs to be assigned to financial management area &2

CNV_20400_CHECK055 - Overview

• Message type: E = Error

• Message class: CNV_20400_CHECK - Messages for check functions (controlling area merge)

• Message number: 055

• Message text: Reference CO area &1 needs to be assigned to financial management area &2

What causes this issue?

The reference controlling area is not assigned to any financial
management area, but some source controlling areas are. You must adjust
your Customizing settings. The reference controlling area must be
assigned to the same financial management area as the source controlling
area.
You cannot run the transformation solution Controlling Area Merge
because certain prerequisites have not been met. We recommend that you
contact SAP for support by creating a ticket using component CA-LT-CNV.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CNV_20400_CHECK055 - Details

• The SAP error message CNV_20400_CHECK055 indicates that there is a mismatch between the controlling area (CO area) and the financial management area (FM area) in your SAP system. This error typically arises during data migration or conversion processes, particularly when using SAP's Conversion Tools or during the implementation of new functionalities.
  
  Cause:
  The error occurs when:
  
  A controlling area (CO area) is not properly assigned to a financial management area (FM area).
  The configuration settings in the system do not align, leading to inconsistencies in the assignment of CO areas to FM areas.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Configuration:
  
  Go to the SAP Customizing Implementation Guide (IMG) and navigate to the following path:Controlling -> General Controlling -> Master Data -> Assign Controlling Area to Financial Management Area
  
  Ensure that the controlling area (CO area) in question is assigned to the correct financial management area (FM area).
  
  
  
  Assign CO Area to FM Area:
  
  If the assignment