How To Fix CNV_20400_CHECK054 - Implicit conversion of controling area currency type to 30

CNV_20400_CHECK054 - Overview

• Message type: E = Error

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

• Message number: 054

• Message text: Implicit conversion of controling area currency type to 30

What causes this issue?

Implicit change of Currency Types to 30. Conversion can't be done with
different Currencies. A currency conversion must be done before the
controlling area merge.
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_CHECK054 - Details

• The SAP error message CNV_20400_CHECK054 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an implicit conversion issue related to the controlling area currency type.
  
  Cause:
  The error arises when there is a mismatch between the currency type defined in the controlling area and the currency type of the data being processed. Specifically, it suggests that the system is trying to convert a currency type to a controlling area currency type (often represented by the number 30) but is unable to do so due to incompatible formats or definitions.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Controlling Area Settings:
  
  Go to the transaction code OKKP (Controlling Area) and verify the currency settings for the controlling area. Ensure that the currency type is correctly defined and matches the data being migrated.
  
  
  
  Review Data Source:
  
  Examine the