How To Fix KG402 - Historic period must be before forecast period

KG402 - Overview

• Message type: E = Error

• Message class: KG - CO-PA Planning

• Message number: 402

• Message text: Historic period must be before forecast period

What causes this issue?

The "To" period of the past time interval is larger than the "From"
period of the time interval you are planning.

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?

Change the past time interval so that it falls before the interval
being planned.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KG402 - Historic period must be before forecast period ?

  The SAP error message KG402 ("Historic period must be before forecast period") typically occurs in the context of planning and forecasting within SAP, particularly in modules like SAP Controlling (CO) or SAP Integrated Business Planning (IBP). This error indicates that there is a mismatch in the time periods being used for historical data and forecast data.
  
  Cause:
  The error arises when the system detects that the historical data period you are trying to use is not before the forecast period. For example, if you are trying to create a forecast for the year 2024 but are referencing historical data from 2024 or later, the system will throw this error.
  
  Solution:
  To resolve the KG402 error, you can take the following steps:
  
  
  Check Time Periods: Ensure that the historical data you are referencing is indeed from a period that precedes the forecast period. For example, if your forecast is for 2024, make sure the historical data