How To Fix AJ126 - Season definition for season &1 is not unique

AJ126 - Overview

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 126

• Message text: Season definition for season &1 is not unique

What causes this issue?

You have defined season &v1& in the rate category facts or installation
facts. In doing so, you have defined the season periods differently for
the season, and this is not permitted.

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?

Define one season period for season &v1&. Check the season definitions
in the rate category facts for rate categories &v2& and &v3& and in the
installation facts for installation &v3&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AJ126 - Season definition for season &1 is not unique ?

  The SAP error message AJ126, which states "Season definition for season &1 is not unique," typically occurs in the context of SAP's Seasonal Planning or similar modules where seasons are defined for various planning purposes. This error indicates that there are multiple entries in the system for the same season, which leads to ambiguity in the data.
  
  Cause:
  
  Duplicate Entries: The most common cause of this error is that there are duplicate season definitions in the system. This can happen if the same season is defined multiple times with the same identifier or if there are overlapping date ranges for the same season.
  Incorrect Configuration: There may be a configuration issue where the season definitions are not set up correctly, leading to conflicts.
  Data Migration Issues: If data has been migrated from another system, it is possible that duplicate records were created during the migration process.
  
  
  Solution:
  
  Check Season Definitions: Go to the transaction code related