How To Fix /SAPAPO/MSDP_SEASON123 - Seasons can only be used once in a season year

/SAPAPO/MSDP_SEASON123 - Overview

• Message type: E = Error

• Message class: /SAPAPO/MSDP_SEASON -

• Message number: 123

• Message text: Seasons can only be used once in a season year

Self-Explanatory Message

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/SAPAPO/MSDP_SEASON123 - Details

• The SAP error message /SAPAPO/MSDP_SEASON123 indicates that there is an issue with the use of seasons in the SAP Advanced Planning and Optimization (APO) module, specifically in the context of seasonal planning. The error message states that a particular season can only be used once in a given season year. This typically occurs when there is an attempt to assign the same season multiple times within the same year, which is not allowed.
  
  Cause:
  
  Duplicate Season Assignment: The most common cause of this error is that the same season has been assigned to multiple planning objects (like products or locations) within the same season year.
  Incorrect Configuration: There may be a configuration issue in the seasonal planning setup, where the same season is inadvertently being reused.
  Data Entry Error: Manual data entry errors can lead to the same season being assigned multiple times.
  
  
  Solution:
  
  Check Season Assignments: Review the season assignments for the relevant planning objects.