How To Fix KM644 - Currency key of the transaction currency is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: KM - Error messages for Profit Center Accounting

• Message number: 644

• Message text: Currency key of the transaction currency is missing

What causes this issue?

You have added value fields that use the transaction currency to your
planning layout. However, you have not specified a currency key.

How to fix this error?

Enter the currency key of the transaction currency in the general data
selection or the desired rows/columns of your planning layout.

Error message extract from SAP system. Copyright SAP SE.

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• What is the cause and solution for SAP error message KM644 - Currency key of the transaction currency is missing ?

  The SAP error message KM644, which states "Currency key of the transaction currency is missing," typically occurs in the context of financial transactions where a currency key is required but not provided. This error can arise in various modules, such as Financial Accounting (FI) or Controlling (CO), when processing transactions that involve currency conversion or currency-specific calculations.
  
  Cause:
  
  Missing Currency Key: The most common cause is that the transaction being processed does not have a specified currency key. This can happen if the currency field is left blank or if the currency is not defined in the relevant master data.
  Incorrect Configuration: The configuration settings for the currency types in the system may not be set up correctly, leading to missing currency keys in transactions.
  Data Entry Errors: Manual data entry errors can lead to missing or incorrect currency information in transaction records.
  Master Data Issues: The master data for the relevant accounts or cost