How To Fix /SAPCEM/DISPO051 - Requirement start & is in the past

/SAPCEM/DISPO051 - Overview

• Message type: E = Error

• Message class: /SAPCEM/DISPO -

• Message number: 051

• Message text: Requirement start & is in the past

Self-Explanatory Message

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/SAPCEM/DISPO051 - Details

• The SAP error message /SAPCEM/DISPO051 Requirement start & is in the past typically occurs in the context of SAP's Advanced Planning and Optimization (APO) or similar modules where planning and scheduling are involved. This error indicates that there is a requirement (such as a production order, purchase order, or similar) that has a start date that is set in the past, which is not acceptable for the planning process.
  
  Cause:
  
  Incorrect Date Entry: The requirement was created with a start date that is earlier than the current date.
  Data Migration Issues: If data was migrated from another system, it may have incorrect dates.
  Planning Horizon: The planning horizon may not be set correctly, leading to requirements being scheduled in the past.
  Changes in Demand: Changes in demand or supply may have caused the requirement to be recalculated with an outdated date.
  
  
  Solution:
  
  Check Requirement Dates: Review the requirement in question and verify the start date. If it