How To Fix O4121 - Unable to determine exchange rate from & to &, unable to evaluate formula

SAP Error Message - Details

• Message type: E = Error

• Message class: O4 - IS-Oil: MAP message pool

• Message number: 121

• Message text: Unable to determine exchange rate from & to &, unable to evaluate formula

What causes this issue?

No entry exists in the exchange rate table for the specified currency
pair.

System Response

The system is unable to determine an exchange rate for the given
currency pair.

How to fix this error?

Make an entry in the table. Follow the menu path in Customizing: Global
Settings -> Currencies -> Enter Exchange Rates (transaction OB08). The
entry may be for any date in the past as a given exchange rate is valid
until overwritten by a more recent entry in the table.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message O4121 - Unable to determine exchange rate from & to &, unable to evaluate formula ?

  The SAP error message O4121, "Unable to determine exchange rate from & to &, unable to evaluate formula," typically occurs in the context of currency conversion or when dealing with foreign currency transactions in SAP. This error indicates that the system is unable to find a valid exchange rate for the specified currencies, which is necessary for processing transactions that involve currency conversion.
  Causes:
  
  Missing Exchange Rate: The exchange rate between the specified currencies is not maintained in the system.
  Invalid Currency Pair: The currencies specified in the transaction may not be valid or recognized by the system.
  Date Issues: The exchange rate may not be valid for the date of the transaction. Exchange rates are often maintained for specific periods, and if the transaction date falls outside this range, the system will not find a valid rate.
  Configuration Issues: There may be issues with the configuration of the currency types or the exchange rate types in the system.
  Formula Evaluation: If the system is trying to evaluate a formula for currency conversion and cannot find the necessary data, it may trigger this error.
  
  Solutions:
  
  
  Maintain Exchange Rates:
  
  Go to the transaction code OB08 to maintain exchange rates. Ensure that the exchange rate for the specified currency pair is correctly entered and valid for the transaction date.
  
  
  
  Check Currency Configuration:
  
  Verify that the currencies involved are correctly configured in the system. Check the currency types and ensure they are set up properly in the configuration settings.
  
  
  
  Review Transaction Date:
  
  Ensure that the transaction date falls within the range of valid exchange rates. If necessary, update the exchange rates to include the required date.
  
  
  
  Check for Formula Errors:
  
  If the error is related to a formula, review the formula used for currency conversion. Ensure that all components of the formula are valid and that the necessary data is available.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for additional guidance on handling currency conversion and exchange rates.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They may provide insights specific to your system configuration.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  OB08: Maintain exchange rates.
  OBBS: Display exchange rates.
  
  
  
  Configuration Path: 
  
  SPRO ? Financial Accounting (New) ? Financial Accounting Global Settings (New) ? Currencies ? Define Exchange Rates.
  
  
  
  Common Currency Types: 
  
  01: Transaction currency
  10: Group currency
  30: Hard currency
  
  
  
  By following these steps, you should be able to resolve the O4121 error and ensure that currency conversions are processed correctly in your SAP system.