How To Fix CNV_20345_CHECK027 - Differences regarding currency keys detected, merge not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20345_CHECK - Message Class for 20345 Checks

• Message number: 027

• Message text: Differences regarding currency keys detected, merge not possible

What causes this issue?

The participating profit centers use different currencies. If you want
to merge the profit centers, a currency conversion must be done before
the conversion. If not, the mapping values must be changed.
You cannot run the transformation solution 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_20345_CHECK027 - Differences regarding currency keys detected, merge not possible ?

  The SAP error message CNV_20345_CHECK027 indicates that there are differences in currency keys detected during a data migration or conversion process, which prevents the merging of data. This error typically arises in the context of SAP data migration projects, especially when using tools like the SAP S/4HANA Migration Cockpit or other data conversion tools.
  Cause:
  The error occurs when the system identifies that there are inconsistencies in the currency keys between the source and target systems. This can happen due to:
  
  
  Different Currency Keys: The source and target systems may have different currency keys defined for the same currency. For example, if the source system uses "USD" as a currency key and the target system uses "US" or "USD1", this discrepancy will trigger the error.
  
  
  Missing Currency Configuration: The target system may not have the necessary currency configuration set up, leading to a mismatch.
  
  
  Data Inconsistencies: There may be inconsistencies in the data being migrated, such as records that reference currencies that do not exist in the target system.
  
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Currency Configuration:
  
  Verify that all currency keys in the source system are correctly defined in the target system. Ensure that the currency keys match exactly.
  
  
  
  Update Currency Keys:
  
  If there are discrepancies, you may need to update the currency keys in the source data to match those in the target system. This can often be done through data transformation or mapping during the migration process.
  
  
  
  Review Migration Settings:
  
  Check the settings in the migration tool you are using. Ensure that the mapping of currency keys is correctly configured.
  
  
  
  Data Cleansing:
  
  Perform data cleansing on the source data to ensure that all currency references are valid and consistent with the target system.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the specific migration tool you are using. There may be specific guidelines or best practices for handling currency key discrepancies.
  
  
  
  Testing:
  
  After making the necessary adjustments, conduct a test migration to ensure that the issue has been resolved.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to this error.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it may have specific features for handling currency mappings.
  Data Migration Best Practices: Review best practices for data migration in SAP, focusing on currency handling and data consistency.
  
  By addressing the currency key discrepancies and ensuring proper configuration, you should be able to resolve the CNV_20345_CHECK027 error and successfully complete your data migration.