How To Fix /SAPAPO/MA811 - Invalid factory calendar day

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MA -

• Message number: 811

• Message text: Invalid factory calendar day

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MA811 - Invalid factory calendar day ?

  The SAP error message /SAPAPO/MA811 Invalid factory calendar day typically occurs in the context of Advanced Planning and Optimization (APO) when there is an issue with the factory calendar settings. This error indicates that the system is trying to access a date that is not valid according to the factory calendar defined for the relevant location or production facility.
  Causes:
  
  Invalid Date: The date being referenced may not exist in the factory calendar. For example, it could be a weekend or a holiday that is not defined as a working day.
  Factory Calendar Configuration: The factory calendar may not be properly configured or may not include the necessary working days.
  Mismatch in Date Formats: There could be a mismatch in the date formats being used in the system.
  Data Entry Errors: Manual entries or data uploads may have introduced invalid dates.
  
  Solutions:
  
  
  Check Factory Calendar:
  
  Go to the transaction code SCAL (Maintain Factory Calendar) in SAP.
  Verify that the factory calendar assigned to the relevant location is correctly configured and includes the date in question.
  
  
  
  Adjust Planning Parameters:
  
  If the date is indeed a non-working day, consider adjusting the planning parameters or the scheduling settings to avoid scheduling on non-working days.
  
  
  
  Review Date Inputs:
  
  Ensure that any date inputs (e.g., in planning runs, production orders, etc.) are valid and correspond to working days in the factory calendar.
  
  
  
  Check for Custom Logic:
  
  If there are any custom developments or enhancements in the system that manipulate dates, review them to ensure they are not causing the issue.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to factory calendars and scheduling to ensure compliance with best practices.
  
  
  
  Testing:
  
  After making changes, perform tests to ensure that the error does not recur and that the system behaves as expected.
  
  
  
  Related Information:
  
  Factory Calendar: A factory calendar defines the working days and non-working days for a specific location. It is crucial for scheduling and planning processes in SAP APO.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SCAL for factory calendar maintenance and MD04 for stock/requirements list to analyze the context of the error.
  SAP Notes: Check SAP Notes for any known issues or patches related to factory calendar errors.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis or APO support team for further investigation.