How To Fix W0039 - Time slots overlap (start & end &)

SAP Error Message - Details

• Message type: E = Error

• Message class: W0 - Customizing - ISR

• Message number: 039

• Message text: Time slots overlap (start & end &)

What causes this issue?

You attempted to assign a wave line a time slot which overlaps with a
time slot already assigned.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Select a new time slot and assign it to the wave line. Make sure there
are no overlaps in the time slots in the line.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W0039 - Time slots overlap (start & end &) ?

  SAP Error Message:
  
  W0039 - Time slots overlap (start & end &)
  
  Cause:
  This warning message occurs when you try to create or maintain time slots (e.g., in work schedules, shift definitions, or time management infotypes) where the defined time intervals overlap each other. In other words, the start and end times of one time slot intersect with those of another, which is not allowed because time slots must be distinct and non-overlapping.
  
  Where it typically occurs:
  
  In Personnel Time Management when defining work schedules or shift times (e.g., in transaction PT01, PT02, or when maintaining infotype 2001 - Absences, or 2002 - Attendances).
  When setting up daily work schedules or weekly work schedules.
  In Factory Calendar or Shift Planning where time intervals are defined.
  
  
  Explanation:
  Time slots represent periods during a day (e.g., 08:00 to 12:00, 13:00 to 17:00). If you define a time slot from 08:00 to 12:00 and another from 11:00 to 15:00, these overlap between 11:00 and 12:00, which is invalid.
  
  Solution:
  
  Check the time intervals you have entered for the time slots.
  Adjust the start and end times so that no two time slots overlap.
  Ensure that the end time of one slot is less than or equal to the start time of the next slot.
  If you need continuous coverage, make sure the end time of one slot equals the start time of the next slot (e.g., 08:00-12:00 and 12:00-16:00).
  Review all time slots for the day or period to ensure no overlaps.
  
  
  Additional Information:
  
  This is a warning message (W0039), so depending on the configuration, you might be able to save the data but it is not recommended as it can cause inconsistencies in time evaluation.
  Overlapping time slots can cause errors in payroll, attendance recording, and absence management.
  Use SAP standard reports or transaction codes to review and analyze time slot definitions if you have many entries.
  If you are working with shift planning, ensure that shifts are properly sequenced without overlaps.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Message
  W0039 Time slots overlap (start & end &)
  
  
  Cause
  Time intervals defined overlap each other
  
  
  Solution
  Adjust start/end times to avoid overlaps
  
  
  Impact
  Can cause incorrect time evaluation and payroll errors
  
  
  Where
  Work schedules, shift definitions, time infotypes
  
  
  
  
  If you provide the exact context or transaction where you encountered this message, I can give more tailored advice.