How To Fix IW437 - Date &1 is not a workday; last workday is &2

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 437

• Message text: Date &1 is not a workday; last workday is &2

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 IW437 - Date &1 is not a workday; last workday is &2 ?

  The SAP error message IW437 indicates that the date specified in a transaction is not a workday, and it provides the last workday as a reference. This error typically occurs in the context of maintenance planning or work order processing, where operations are scheduled based on workdays defined in the system.
  Cause:
  
  Non-Workday Date: The date entered in the transaction is a weekend or a public holiday, which is not considered a workday in the system.
  Calendar Settings: The factory calendar or work schedule settings may not include the specified date as a valid workday.
  Incorrect Date Entry: There may have been a mistake in entering the date, leading to the selection of a non-workday.
  
  Solution:
  
  Change the Date: Modify the date in the transaction to a valid workday. You can refer to the last workday provided in the error message as a guide.
  Check Calendar Settings: Review the factory calendar settings in SAP to ensure that the workdays are correctly defined. You can do this by navigating to:
  
  Transaction Code: SCAL (for maintaining calendars)
  Transaction Code: CR01 (for checking the work schedule)
  
  
  Use the Workday Calculation: If you need to calculate the next available workday, you can use the function module WORKDAY_CALC to programmatically determine the next workday based on your calendar settings.
  Consult with Your SAP Administrator: If you believe the calendar settings are incorrect or need adjustments, consult with your SAP administrator or the person responsible for maintaining the system configuration.
  
  Related Information:
  
  Factory Calendar: This defines the working days and holidays for a specific plant or company code. It is crucial for scheduling and planning activities.
  Work Schedule: This defines the working hours and days for employees and can affect how maintenance tasks are scheduled.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IW31 (Create Work Order), IW32 (Change Work Order), and IW33 (Display Work Order) to understand where the error might occur.
  
  By addressing the cause of the error and following the suggested solutions, you should be able to resolve the IW437 error in SAP.