How To Fix F4028 - Enter a valid posting period

F4028 - Overview

• 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.

F4028 - Details

• 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