How To Fix FDT_EXPRESSIONS678 - Currency key for field &1 is different from the reference field &2

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 678

• Message text: Currency key for field &1 is different from the reference field &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS678 - Currency key for field &1 is different from the reference field &2 ?

  The SAP error message FDT_EXPRESSIONS678 indicates that there is a mismatch in the currency keys between two fields in a data transformation or mapping scenario. Specifically, it states that the currency key for the field specified as &1 is different from the reference field specified as &2. This typically occurs in scenarios involving financial data where currency consistency is crucial.
  Cause:
  
  Currency Mismatch: The primary cause of this error is that the two fields being compared or transformed have different currency keys. For example, one field may be in USD while the other is in EUR.
  Data Mapping Issues: If you are using a mapping tool or transformation logic, the mapping may not correctly align the currency fields.
  Configuration Errors: There may be configuration issues in the data model or transformation settings that lead to this inconsistency.
  
  Solution:
  
  Check Currency Fields: Review the fields involved in the transformation. Ensure that both fields (&1 and &2) are set to the same currency key.
  Adjust Mapping Logic: If you are using a mapping tool, adjust the mapping logic to ensure that the currency fields are aligned correctly. You may need to add conversion logic if the currencies are different.
  Data Validation: Validate the source data to ensure that the currency keys are correctly assigned and consistent across the relevant records.
  Configuration Review: Check the configuration settings in the relevant SAP modules (like FI, CO) to ensure that currency settings are correctly defined.
  Use Currency Conversion: If necessary, implement currency conversion logic to convert one currency to another before processing.
  
  Related Information:
  
  SAP Documentation: Refer to the SAP Help Portal for detailed documentation on currency handling and data transformation.
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator) to inspect the data structures and mappings.
  Debugging: If the issue persists, consider debugging the transformation process to identify where the mismatch occurs.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on handling currency mismatches.
  
  By following these steps, you should be able to resolve the FDT_EXPRESSIONS678 error and ensure that your currency fields are consistent throughout your SAP processes.