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

O4121 - Overview

• 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