How To Fix PR326 - Forecast model & requires the entry of a weighting group

PR326 - Overview

• Message type: E = Error

• Message class: PR - Forecast: Help messages

• Message number: 326

• Message text: Forecast model & requires the entry of a weighting group

What causes this issue?

You have chosen a forecast model which requires a weighting group in
order to calculate the forecast values.

How to fix this error?

Please enter a weighting group.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PR326 - Forecast model & requires the entry of a weighting group ?

  The SAP error message PR326 indicates that a forecast model requires the entry of a weighting group. This error typically occurs in the context of demand planning and forecasting within SAP's Advanced Planning and Optimization (APO) module or similar functionalities in SAP ERP.
  
  Cause:
  The error arises when you are trying to create or modify a forecast model, but the system requires a weighting group to be specified. Weighting groups are used in forecasting to assign different weights to historical data points, which can influence the forecast outcome. If this information is missing, the system cannot proceed with the forecast calculation.
  
  Solution:
  To resolve the PR326 error, you need to ensure that a weighting group is specified in the forecast model. Here are the steps to do this:
  
  
  Access the Forecast Model:
  
  Navigate to the transaction or application where you are managing your forecast models (e.g., transaction code /SAPAPO/MC90 for APO).
  
  
  
  Edit the Forecast Model:
  
  Open the specific