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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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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