How To Fix KG451 - Enter a valid period

KG451 - Overview

• Message type: E = Error

• Message class: KG - CO-PA Planning

• Message number: 451

• Message text: Enter a valid period

What causes this issue?

You entered an invalid period for the year &V1&. The year &V1& contains
&V2& posting periods and special periods &V3& to &V4&.

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?

As the period for the year &V1&, enter a value between 1 and &V2& or
between &V3& and &V4&.
Check whether you have set planning by week or by period.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KG451 - Enter a valid period ?

  The SAP error message KG451 "Enter a valid period" typically occurs in the context of controlling (CO) or financial accounting (FI) when a user attempts to execute a transaction or report that requires a specific period to be entered, but the period provided is either invalid or not recognized by the system.
  Causes:
  
  Invalid Period: The period entered does not exist in the system. This could be due to a typo or selecting a period that is not open for posting.
  Closed Period: The period may be closed for posting in the system, meaning that no further transactions can be recorded for that period.
  Fiscal Year Variant Issues: The fiscal year variant may not be set up correctly, or the period does not align with the fiscal year settings.
  User Authorization: The user may not have the necessary authorizations to access the specified period.
  
  Configuration Issues: There may be configuration issues in the controlling area or