How To Fix IW129 - End time interval may not be positive

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 129

• Message text: End time interval may not be positive

What causes this issue?

You maintained a value for the <GL:time_interval>time interval</> that
falls after the end date of the <GL:operation>operation</>. This is not
allowed.

System Response

INCLUDE 'KEINE-VERARBEITUNG' OBJECT DOKU ID TX LANGUAGE E

How to fix this error?

Enter a different time interval for the end of the
operation element.

How can this happen?

The sub-operation should be finished 1 hour before the end of the
operation. The maintenance planner responsible enters
<LB>1- h</> in the field <LS>TimeInterval end</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IW129 - End time interval may not be positive ?

  The SAP error message IW129 ("End time interval may not be positive") typically occurs in the context of work order processing, particularly when dealing with time entries for operations or activities in a maintenance order. This error indicates that the end time for a specific operation or activity is set incorrectly, leading to a situation where the end time is earlier than the start time or is not defined properly.
  Cause:
  
  Incorrect Time Entry: The end time for an operation is set to a time that is earlier than the start time.
  Missing Time Data: The end time may not be filled in, leading the system to interpret it as a positive value.
  Data Entry Error: Manual entry errors during the creation or modification of work orders or operations.
  
  Solution:
  To resolve the IW129 error, you can follow these steps:
  
  
  Check Time Entries:
  
  Go to the work order or operation in question.
  Verify the start and end times for each operation. Ensure that the end time is later than the start time.
  
  
  
  Correct Time Data:
  
  If the end time is incorrect, update it to a valid time that is after the start time.
  If the end time is missing, enter a valid end time.
  
  
  
  Review Scheduling:
  
  Ensure that the scheduling settings for the operation are correct. Sometimes, the scheduling parameters can affect how times are calculated.
  
  
  
  Save Changes:
  
  After making the necessary corrections, save the changes and try to process the work order again.
  
  
  
  Consult Documentation:
  
  If you are unsure about the correct time entries or scheduling, refer to SAP documentation or consult with your SAP support team for guidance.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like IW31 (Create Order), IW32 (Change Order), or IW33 (Display Order) to access and modify work orders.
  User Roles: Ensure that you have the necessary permissions to make changes to work orders and operations.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message or provide additional troubleshooting steps.
  
  If the problem persists after following these steps, it may be beneficial to reach out to your SAP support team for further assistance, as they can provide more tailored help based on your specific system configuration and data.