IW427 - Backward scheduling: Please enter end date

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 427

• Message text: Backward scheduling: Please enter end date

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 IW427 - Backward scheduling: Please enter end date ?

  The SAP error message IW427, which states "Backward scheduling: Please enter end date," typically occurs in the context of creating or modifying maintenance orders or work orders in the SAP system. This error indicates that the system requires an end date to perform backward scheduling, which is a method used to determine the start date of a task based on its end date.
  Cause:
  
  Missing End Date: The most common cause of this error is that the end date for the maintenance order or work order has not been entered.
  Scheduling Parameters: The scheduling parameters may not be set correctly, leading to the system not being able to calculate the necessary dates.
  Order Type Configuration: The configuration of the order type may not allow for backward scheduling without an end date.
  User Input Error: The user may have overlooked entering the end date while creating or modifying the order.
  
  Solution:
  
  Enter End Date: The simplest solution is to enter a valid end date for the order. This can be done in the order creation or modification screen.
  Check Scheduling Settings: Review the scheduling settings in the order type configuration to ensure that backward scheduling is set up correctly.
  Review Order Type Configuration: If the issue persists, check the configuration of the order type in the SAP system to ensure that it allows for backward scheduling and that all required fields are properly defined.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on scheduling and order management.
  User Training: Ensure that users are trained on the importance of entering all required fields, including the end date, when creating or modifying orders.
  
  Related Information:
  
  Backward Scheduling: This is a scheduling method where the end date is defined first, and the system calculates the start date based on the duration of the task.
  SAP Transaction Codes: Familiarize yourself with relevant transaction codes such as IW31 (Create Order), IW32 (Change Order), and IW33 (Display Order) to navigate the order management process effectively.
  SAP Notes: Check for any SAP Notes related to IW427 for additional insights or patches that may address specific issues related to this error message.
  User Roles and Authorizations: Ensure that the user has the necessary roles and authorizations to create or modify orders in the system.
  
  By addressing the missing end date and ensuring proper configuration and user training, you should be able to resolve the IW427 error effectively.