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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20400_CHECK054 - Implicit conversion of controling area currency type to 30 ?

  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 source data that is being migrated. Ensure that the currency types in the source data are compatible with the controlling area currency type. If necessary, adjust the source data to match the expected currency type.
  
  
  
  Adjust Migration Settings:
  
  If you are using a migration tool, check the settings and mappings defined in the migration project. Ensure that the currency mappings are correctly set up to avoid implicit conversions.
  
  
  
  Data Transformation:
  
  If the source data contains different currency types, consider transforming the data before migration to ensure consistency with the controlling area currency type.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific migration process you are using. There may be specific guidelines or known issues related to currency conversions.
  
  
  
  Testing:
  
  After making adjustments, perform a test migration with a smaller dataset to ensure that the changes resolve the error before proceeding with the full migration.
  
  
  
  Related Information:
  
  Currency Types in SAP: In SAP, currency types are defined in the system and can include various types such as company code currency, controlling area currency, and others. Understanding these types is crucial for data consistency.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error message.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit, as it provides tools and guidelines for data migration, including handling currency types.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific system configuration and migration scenario.