How To Fix /SAPAPO/SCHED808 - An error occurred during execution of scheduling

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SCHED -

• Message number: 808

• Message text: An error occurred during execution of scheduling

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SCHED808 - An error occurred during execution of scheduling ?

  The SAP error message /SAPAPO/SCHED808 An error occurred during execution of scheduling typically occurs in the context of Advanced Planning and Optimization (APO) within SAP systems. This error can arise during the scheduling process, which is part of the production planning and detailed scheduling functionalities.
  Causes:
  
  Data Issues: Missing or incorrect master data (e.g., resources, production versions, or material master data) can lead to scheduling errors.
  Configuration Problems: Incorrect settings in the APO system or in the planning books can cause scheduling to fail.
  Resource Constraints: If there are not enough resources (e.g., machines, labor) available to meet the scheduling requirements, this error may occur.
  Locking Issues: If another process is locking the data that the scheduling process needs to access, it can lead to this error.
  Time Period Issues: Scheduling might be attempted for a time period that is not valid or is outside the defined planning horizon.
  Custom Code or Enhancements: If there are custom developments or enhancements in the scheduling process, they might introduce errors.
  
  Solutions:
  
  Check Master Data: Verify that all relevant master data is complete and accurate. This includes checking the material master, resource master, and production versions.
  Review Configuration: Ensure that the configuration settings in APO are correct. This includes checking the planning books, data views, and any relevant settings in the APO system.
  Analyze Resource Availability: Check the availability of resources and ensure that they are correctly defined and not over-allocated.
  Check for Locks: Use transaction codes like SM12 to check for any locks on the relevant data and resolve them if necessary.
  Validate Time Periods: Ensure that the scheduling is being attempted within the valid planning horizon and that the time periods are correctly defined.
  Debugging: If the issue persists, consider debugging the scheduling process to identify the exact point of failure. This may require technical expertise.
  Consult Logs: Check the application logs (transaction SLG1) for more detailed error messages that can provide insights into the root cause of the issue.
  SAP Notes: Search for relevant SAP Notes that may address known issues related to this error message. Applying the latest patches or updates may resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/SDP94 (for planning board) and /SAPAPO/SCM1 (for monitoring).
  SAP Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  Documentation: Review SAP documentation related to APO scheduling for best practices and troubleshooting steps.
  
  If the problem persists after trying the above solutions, it may be necessary to involve SAP support or a technical consultant with expertise in APO to further investigate the issue.