How To Fix E!018 - Line &: A fixed exchange rate cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: E! -

• Message number: 018

• Message text: Line &: A fixed exchange rate cannot be changed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message E!018 - Line &: A fixed exchange rate cannot be changed ?

  The SAP error message E!018 "Line &: A fixed exchange rate cannot be changed" typically occurs in the context of financial transactions, particularly when dealing with foreign currency transactions in SAP. This error indicates that there is an attempt to modify a fixed exchange rate that has already been set for a transaction, which is not allowed.
  Cause:
  
  Fixed Exchange Rate: The exchange rate for the transaction has been set as fixed, meaning it cannot be altered after the transaction has been recorded.
  Transaction Type: The error may arise when trying to change the exchange rate in a document that has already been posted or finalized.
  Configuration Settings: The system settings may be configured to prevent changes to fixed exchange rates for certain types of transactions.
  
  Solution:
  
  Review the Transaction: Check the transaction document to confirm whether the exchange rate is indeed set as fixed. If it is, you will not be able to change it.
  Create a New Document: If you need to use a different exchange rate, consider creating a new transaction document instead of trying to modify the existing one.
  Consult Configuration: If you believe that the fixed exchange rate should be changeable, consult with your SAP configuration team to review the settings related to currency exchange rates.
  Use the Correct Transaction Type: Ensure that you are using the appropriate transaction type that allows for the desired changes. Some transaction types may have restrictions on changing exchange rates.
  Check User Permissions: Ensure that you have the necessary permissions to make changes to the transaction. Sometimes, user roles can restrict certain actions.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message. SAP frequently releases updates that may address known issues.
  Documentation: Review SAP documentation related to currency management and exchange rates for a better understanding of how fixed exchange rates are handled.
  Support: If the issue persists, consider reaching out to SAP support or your internal SAP helpdesk for further assistance.
  
  By following these steps, you should be able to address the error message E!018 effectively.