How To Fix CNV_20400_CHECK009 - At least one controlling area uses a deviating month sequence

CNV_20400_CHECK009 - Overview

• Message type: E = Error

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

• Message number: 009

• Message text: At least one controlling area uses a deviating month sequence

What causes this issue?

The different Fiscal Year Variants do not use monthly periods. This can
be a problem, if the different Variants have different periods. In this
case a conversion would lead to inconsistences and you have to run a
Fiscal Year Variant Conversion before.
You cannot run the transformation solution <ZK>Controlling Area Merge</>
because certain prerequisites have not been met. Please change your
mapping accordingly or 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_CHECK009 - Details

• The SAP error message CNV_20400_CHECK009 indicates that there is an issue with the month sequence configuration in the controlling areas of your SAP system. This error typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  
  Cause:
  The error occurs when at least one controlling area in your SAP system is configured with a month sequence that deviates from the standard or expected month sequence. This can happen if:
  
  Different controlling areas are set up with different fiscal year variants or month sequences.
  There are inconsistencies in the configuration of fiscal year variants across controlling areas.
  The month sequence is not aligned with the expected sequence for the migration process.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Controlling Area Configuration:
  
  Go to the SAP transaction code OKKP (Controlling Area) to review the configuration of your controlling areas.
  Verify the fiscal year variant and month sequence for each