How To Fix F4028 - Enter a valid posting period

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 028

• Message text: Enter a valid posting period

What causes this issue?

The valid posting periods here are: "00" to "16". Period "00" stands for
the balance carried forward in this case.

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 F4028 - Enter a valid posting period ?

  The SAP error message F4028, which states "Enter a valid posting period," typically occurs when a user attempts to post a financial transaction in a period that is either closed or not open for posting in the system. This error is common in financial modules such as FI (Financial Accounting) and can arise due to various reasons.
  Causes of Error F4028
  
  
  Closed Posting Period: The posting period for the transaction date is closed. In SAP, posting periods are defined in the configuration, and once they are closed, no transactions can be posted to them.
  
  
  Incorrect Date: The date entered for the transaction may not correspond to an open posting period. This can happen if the user mistakenly enters the wrong date.
  
  
  Configuration Settings: The configuration settings for the posting periods may not be set up correctly, leading to periods being inadvertently closed or not opened.
  
  
  User Authorization: The user may not have the necessary authorization to post in the specified period.
  
  
  Solutions to Error F4028
  
  
  Check Posting Periods:
  
  Go to the transaction code OB52 (Change View "Posting Periods": Overview).
  Verify the posting periods that are open for the relevant company code and fiscal year.
  Ensure that the period you are trying to post to is indeed open.
  
  
  
  Adjust Transaction Date:
  
  If the transaction date is incorrect, adjust it to a date that falls within an open posting period.
  
  
  
  Change Configuration:
  
  If necessary, you can open the posting period by adjusting the settings in OB52. However, this should be done with caution and typically requires appropriate authorization.
  
  
  
  User Authorization:
  
  Check if the user has the necessary permissions to post in the desired period. If not, consult with your SAP security administrator to grant the required access.
  
  
  
  Consult with Finance Team:
  
  If you are unsure about changing posting periods or if it impacts financial reporting, consult with your finance team or SAP consultant.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  OB52: To view and change posting periods.
  FB50: To post general ledger entries.
  F-02: To post journal entries.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to posting periods or the F4028 error.
  
  
  Documentation: Review SAP documentation or user manuals related to financial posting and period management for more detailed guidance.
  
  
  By following these steps, you should be able to resolve the F4028 error and successfully post your financial transactions in SAP.