How To Fix F4800 - Posting key 00 is reserved for account assignment models

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 800

• Message text: Posting key 00 is reserved for account assignment models

What causes this issue?

Posting key 00 is reserved for account assignment models and therefore
you cannot make any further specifications for this posting key.

System Response

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

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message F4800 - Posting key 00 is reserved for account assignment models ?

  The SAP error message F4800, which states "Posting key 00 is reserved for account assignment models," typically occurs when there is an attempt to use posting key 00 in a context where it is not allowed. Posting keys in SAP are used to define the type of transaction being processed, and each posting key has specific rules and restrictions.
  Cause:
  
  Incorrect Posting Key Usage: Posting key 00 is reserved for specific internal processes related to account assignment models and cannot be used for general postings.
  Configuration Issues: There may be a configuration issue in the Financial Accounting (FI) module where the posting keys are not set up correctly.
  Transaction Type: The transaction being processed may not support the use of posting key 00, leading to this error.
  
  Solution:
  
  Check Posting Key: Ensure that you are using the correct posting key for the transaction you are trying to perform. For general postings, use appropriate posting keys like 01 (Debit) or 11 (Credit).
  Review Configuration: If you are a system administrator or have access to configuration settings, review the configuration of posting keys in the SAP system. This can be done in the following path:
  
  SPRO ? Financial Accounting ? General Ledger Accounting ? Document ? Document Entry ? Define Posting Keys.
  
  
  Consult Documentation: Refer to SAP documentation or help resources to understand the specific use cases for posting key 00 and ensure that your transaction aligns with those use cases.
  Contact Support: If the issue persists and you are unable to resolve it, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Posting Keys: Posting keys are two-digit numbers that control the type of transaction (debit or credit) and the account types that can be posted to.
  Account Assignment Models: These are used in SAP to define how costs are assigned to different accounts, and posting key 00 is specifically reserved for these internal processes.
  Transaction Codes: Familiarize yourself with relevant transaction codes (like FB50 for general ledger postings) to ensure you are using the correct processes.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.