How To Fix PP_SCH_PRODN021 - Simulation session is invalid. Unable to retrieve sourcing information.

SAP Error Message - Details

• Message type: E = Error

• Message class: PP_SCH_PRODN -

• Message number: 021

• Message text: Simulation session is invalid. Unable to retrieve sourcing information.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PP_SCH_PRODN021 - Simulation session is invalid. Unable to retrieve sourcing information. ?

  The SAP error message PP_SCH_PRODN021 indicates that there is an issue with the simulation session in the Production Planning (PP) module. Specifically, it states that the simulation session is invalid and that the system is unable to retrieve sourcing information. This error can occur in various scenarios, particularly when working with production orders, planning runs, or simulations in the PP module.
  Causes:
  
  Session Expiration: The simulation session may have expired or been terminated unexpectedly.
  Data Inconsistency: There may be inconsistencies in the data related to the production order or planning run.
  Configuration Issues: Incorrect configuration settings in the PP module or related areas may lead to this error.
  Authorization Issues: The user may not have the necessary authorizations to access the simulation session or the related data.
  Technical Issues: There could be underlying technical issues, such as database connectivity problems or system performance issues.
  
  Solutions:
  
  Restart the Simulation: Try to restart the simulation session. This can often resolve temporary issues.
  Check Session Status: Verify the status of the simulation session. If it is invalid, you may need to create a new session.
  Review Data Consistency: Check for any inconsistencies in the data related to the production order or planning run. Ensure that all necessary data is available and correctly configured.
  Check Authorizations: Ensure that the user has the necessary authorizations to access the simulation and related data.
  System Logs: Review system logs for any additional error messages or warnings that may provide more context about the issue.
  Consult Documentation: Refer to SAP documentation or notes related to the PP module for any known issues or additional troubleshooting steps.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for further assistance, especially if it appears to be a technical issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in the PP module, such as MD01 (MRP Run), CO01 (Create Production Order), and CO02 (Change Production Order).
  SAP Notes: Check for any SAP Notes that may address this specific error or provide patches or updates.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to diagnose and resolve the PP_SCH_PRODN021 error effectively.