Message type: E = Error
Message class: IW - Order Processing
Message number: 631
Message text: Enter the factory calendar ID
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The SAP error message IW631 ("Enter the factory calendar ID") typically occurs in the context of work order processing or maintenance planning within the SAP system. This error indicates that the system requires a factory calendar ID to be specified, which is essential for scheduling and planning activities.
Cause: Missing Factory Calendar ID: The most common cause of this error is that the factory calendar ID has not been entered in the relevant field. The factory calendar is used to determine working days and holidays for scheduling purposes.
Configuration Issues: There may be issues with the configuration of the factory calendar in the system, such as it not being assigned to the relevant plant or work center. User Input Error: The user may have overlooked entering the factory calendar ID when creating or modifying a work order or maintenance plan.
Solution: Enter Factory Calendar ID: Navigate to the transaction where the error occurred (e.g., IW31 for
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