How To Fix BC409 - Error: Simultaneous use of public holiday calendar and factory calendar

SAP Error Message - Details

• Message type: E = Error

• Message class: BC - Scheduler (calendar)

• Message number: 409

• Message text: Error: Simultaneous use of public holiday calendar and factory calendar

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BC409 - Error: Simultaneous use of public holiday calendar and factory calendar ?

  The SAP error message BC409 indicates that there is a conflict between the public holiday calendar and the factory calendar in your configuration. This error typically arises when the system is trying to process a date or a time-related function that requires both calendars, but they are not set up to work together properly.
  Cause:
  
  Configuration Conflict: The error usually occurs when a public holiday calendar is assigned to a company code or plant, but the system is also trying to use a factory calendar that does not align with the public holiday calendar.
  Inconsistent Settings: If the public holiday calendar and factory calendar have overlapping or conflicting definitions, the system cannot determine which calendar to use for scheduling or planning purposes.
  Missing Assignments: If either calendar is not properly assigned to the relevant organizational units (like company codes or plants), it can lead to this error.
  
  Solution:
  
  
  Check Calendar Assignments:
  
  Go to the configuration settings in SAP and check the assignments of the public holiday calendar and factory calendar to the relevant company codes or plants.
  Ensure that each plant or company code has a clear and consistent assignment of either a public holiday calendar or a factory calendar, but not both simultaneously.
  
  
  
  Review Calendar Definitions:
  
  Review the definitions of both the public holiday calendar and the factory calendar to ensure they do not conflict. This includes checking the holidays defined in the public holiday calendar and the working days defined in the factory calendar.
  If necessary, modify one of the calendars to ensure they are compatible.
  
  
  
  Use Only One Calendar:
  
  If possible, decide whether to use the public holiday calendar or the factory calendar for your scheduling needs. If you choose to use one, remove the assignment of the other to avoid conflicts.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for detailed steps on how to configure calendars correctly. This can provide insights into best practices and common pitfalls.
  
  
  
  Testing:
  
  After making changes, perform tests to ensure that the error does not reoccur and that the scheduling functions as expected.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SPRO (to access the configuration settings) or SCAL (to manage calendars) to make the necessary changes.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message, as there may be known issues or fixes provided by SAP.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, providing additional insights or solutions.
  
  By following these steps, you should be able to resolve the BC409 error and ensure that your public holiday and factory calendars are configured correctly in SAP.