How To Fix FB790 - Invalid +/- sign & for opening balance

SAP Error Message - Details

• Message type: E = Error

• Message class: FB - Batch Programs

• Message number: 790

• Message text: Invalid +/- sign & for opening balance

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FB790 - Invalid +/- sign & for opening balance ?

  The SAP error message FB790, which indicates "Invalid +/- sign for opening balance," typically occurs during the posting of financial transactions, particularly when dealing with opening balances in accounts. This error can arise due to several reasons, and understanding the cause is essential for resolving it.
  Causes of FB790 Error
  
  
  Incorrect Sign for Opening Balance: The opening balance for an account must be entered with the correct sign. For example, if the account is a liability, the opening balance should be entered as a negative value, and for assets, it should be positive.
  
  
  Configuration Issues: The account settings in the chart of accounts may not be configured correctly, leading to discrepancies in how opening balances are interpreted.
  
  
  Data Entry Errors: Manual entry errors, such as entering a positive value for a liability account or a negative value for an asset account, can trigger this error.
  
  
  Posting Period Issues: If the posting period is closed or not open for the transaction date, it may lead to issues with posting balances.
  
  
  Currency Issues: If there are currency conversions involved, discrepancies in currency settings or exchange rates can also lead to this error.
  
  
  Solutions to FB790 Error
  
  
  Check the Sign of the Opening Balance: Ensure that the opening balance is entered with the correct sign based on the account type. For example:
  
  Asset accounts: Positive sign
  Liability accounts: Negative sign
  
  
  
  Review Account Configuration: Verify the configuration of the account in the chart of accounts. Ensure that the account type is set correctly and that it aligns with the expected sign for opening balances.
  
  
  Correct Data Entry: If the error is due to manual entry, correct the values being entered. Double-check the amounts and their signs before posting.
  
  
  Check Posting Period: Ensure that the posting period is open for the date of the transaction. If the period is closed, you may need to open it or post the transaction in an open period.
  
  
  Currency Settings: If applicable, check the currency settings and ensure that the correct currency is being used for the transaction. Verify that any necessary currency conversions are correctly applied.
  
  
  Consult Documentation: If the issue persists, refer to SAP documentation or consult with your SAP support team for further assistance.
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB50 (General Ledger Account Posting), F-02 (General Posting), and OBY6 (Open Item Management) to troubleshoot and resolve issues.
  SAP Notes: Check SAP Notes for any known issues or patches related to the FB790 error.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to post transactions in the relevant accounts.
  
  By following these steps, you should be able to identify the cause of the FB790 error and implement the appropriate solution. If the problem continues, it may be beneficial to engage with your SAP support team for more in-depth troubleshooting.