How To Fix WU450 - Season does not belong to previous season group (old &, new &)

WU450 - Overview

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 450

• Message text: Season does not belong to previous season group (old &, new &)

What causes this issue?

You changed the season of the material. The group for the new
season is different from the previous season.
This can lead to the entries being falsified in the information
system when the reporting timeframes overlap.

Error message extract from SAP system. Copyright SAP SE.

WU450 - Details

• The SAP error message WU450, which states "Season does not belong to previous season group (old &, new &)," typically occurs in the context of managing seasonal products in SAP, particularly in the Retail or Fashion Management modules. This error indicates that there is a mismatch between the season of a product and the expected season group.
  
  Cause:
  
  
  Season Group Configuration: The error usually arises when the new season being assigned to a product does not belong to the defined season group of the previous season. Each season is often categorized into groups, and the system expects a logical progression from one season to the next.
  
  
  Incorrect Season Assignment: If a product is being transitioned from one season to another, and the new season is not correctly configured to follow the previous season, this error will occur.
  
  
  Master Data Issues: There may be inconsistencies or errors in the master data related to seasons, such