How To Fix F4851 - Enter a posting key

SAP Error Message - Details

• Message type: E = Error

• Message class: F4 - Line items/balances/configuration

• Message number: 851

• Message text: Enter a posting key

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 F4851 - Enter a posting key ?

  The SAP error message F4851, which states "Enter a posting key," typically occurs in the context of financial transactions within the SAP system, particularly when dealing with document entry in the Financial Accounting (FI) module. The posting key is a crucial element in SAP that determines the type of transaction being recorded, such as whether it is a debit or a credit, and it also specifies the account type involved.
  Cause:
  The error message F4851 usually arises due to one of the following reasons:
  
  Missing Posting Key: The user has not entered a posting key in the relevant field when trying to post a financial document.
  Incorrect Configuration: The posting keys may not be properly configured in the system for the transaction type being processed.
  User Input Error: The user may have overlooked the posting key field or entered an invalid value.
  
  Solution:
  To resolve the F4851 error, you can take the following steps:
  
  
  Enter a Valid Posting Key: Ensure that you enter a valid posting key in the designated field. Common posting keys include:
  
  40: Debit for customer accounts
  50: Credit for customer accounts
  01: Debit for general ledger accounts
  11: Credit for general ledger accounts
  
  
  
  Check Configuration: If you are an administrator or have access to configuration settings, verify that the posting keys are correctly set up in the system. This can be done through the following path:
  
  SPRO ? Financial Accounting ? General Ledger ? Document Entry ? Define Posting Keys
  
  
  
  Review User Input: Double-check the entire document entry for any missing or incorrect fields. Ensure that all required fields are filled out correctly.
  
  
  Consult Documentation: If you are unsure about which posting key to use, refer to your organization's documentation or consult with a colleague who is familiar with the financial processes.
  
  
  Seek Help from SAP Support: If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error.
  
  
  Related Information:
  
  Posting Keys: Posting keys are defined in the SAP system and are essential for determining how transactions are recorded. Each posting key has specific attributes, such as whether it allows for debit or credit entries, and which account types it can be used with.
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP FI, such as FB50 (G/L Account Document Entry) or F-02 (General Ledger Posting), where this error might occur.
  User Training: Ensure that users are adequately trained on how to enter financial documents in SAP, including the importance of posting keys.
  
  By following these steps, you should be able to resolve the F4851 error and successfully post your financial documents in SAP.