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

SAP Error Message - Details

• 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 to ensure that each activity has only one predecessor. This may involve changing the routing or the sequence of operations.
  
  
  
  Review Planning Parameters:
  
  Check the planning parameters and settings in the CTM profile. Ensure that the settings align with the intended workflow and that they do not allow for multiple predecessors.
  
  
  
  Use the CTM Monitor:
  
  Utilize the CTM monitor to analyze the planning run and identify where the issue is occurring. This tool can help you visualize the relationships between activities and their predecessors.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidance on setting up activities and their relationships correctly.
  
  
  
  Testing:
  
  After making the necessary adjustments, run the planning process again to see if the error persists.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on activity scheduling in APO.
  Training and Documentation: Consider reviewing training materials or documentation related to SAP APO and CTM to better understand how to manage activity relationships.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.