How To Fix /SAPAPO/CTM1345 - Plan &1: Activity &2 has more than one predecessor

/SAPAPO/CTM1345 - Overview

• Message type: E = Error

• Message class: /SAPAPO/CTM1 -

• Message number: 345

• Message text: Plan &1: Activity &2 has more than one predecessor

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CTM1345 - Plan &1: Activity &2 has more than one predecessor ?

  The SAP error message /SAPAPO/CTM1345 indicates that there is an issue with the activity scheduling in the SAP Advanced Planning and Optimization (APO) module, specifically within the Capacity Planning or CTM (Capable-to-Match) functionality. The error message states that a specific activity has more than one predecessor, which is not allowed in the context of the planning process.
  
  Cause:
  The error occurs when:
  
  An activity in the planning process is defined with multiple predecessor activities, which violates the rules of the scheduling logic in SAP APO.
  The system expects a linear sequence of activities where each activity can only have one predecessor to maintain a clear and manageable workflow.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Activity Definitions:
  
  Review the activity definitions in the planning book or the relevant master data. Ensure that each activity has only one predecessor defined.
  
  
  
  Modify Predecessor Relationships:
  
  If an activity is incorrectly set up with multiple predecessors, modify the relationships