How To Fix /SAPAPO/PAGT_HEUR120 - Scheduling errors occured while infinite scheduling

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PAGT_HEUR -

• Message number: 120

• Message text: Scheduling errors occured while infinite scheduling

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/PAGT_HEUR120 - Scheduling errors occured while infinite scheduling ?

  The SAP error message /SAPAPO/PAGT_HEUR120 indicates that there were scheduling errors during the infinite scheduling process in SAP Advanced Planning and Optimization (APO). This error typically arises when the system encounters issues while trying to schedule production orders or planned orders based on the available resources, capacities, or constraints.
  Causes:
  
  Resource Constraints: The resources (e.g., machines, labor) may not have enough capacity to handle the scheduled orders.
  Order Conflicts: There may be conflicts between orders, such as overlapping production times or incompatible products being scheduled on the same resource.
  Missing Master Data: Incomplete or incorrect master data (e.g., material master, resource master) can lead to scheduling issues.
  Capacity Planning Issues: Incorrect capacity planning settings or parameters can cause the system to miscalculate available capacity.
  Time Period Issues: The scheduling horizon may not be set correctly, leading to scheduling attempts outside of the available time frame.
  Configuration Issues: Incorrect configuration in the APO system or in the heuristics used for scheduling can lead to errors.
  
  Solutions:
  
  Check Resource Availability: Review the capacity of the resources involved in the scheduling process. Ensure that they have enough capacity to handle the planned orders.
  Review Order Overlaps: Check for any overlapping orders that may be causing conflicts. Adjust the scheduling of these orders as necessary.
  Validate Master Data: Ensure that all relevant master data is complete and accurate. This includes checking material masters, resource masters, and any other relevant data.
  Adjust Capacity Planning Settings: Review and adjust the capacity planning settings in the system to ensure they align with the actual production capabilities.
  Examine Scheduling Horizon: Make sure that the scheduling horizon is set correctly and that the orders are being scheduled within this timeframe.
  Check Heuristic Configuration: Review the configuration of the heuristics being used for scheduling. Ensure that they are set up correctly and are appropriate for the specific scheduling scenario.
  Run the Heuristic in Simulation Mode: If possible, run the heuristic in simulation mode to identify specific issues without affecting live data.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like /SAPAPO/MC90 to access the planning book and analyze the data related to the scheduling.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to this error.
  APO Documentation: Refer to the official SAP documentation for APO for detailed information on scheduling and heuristics.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with detailed logs and error messages for further analysis.
  
  By following these steps, you should be able to identify the root cause of the scheduling errors and implement the necessary solutions to resolve them.