Discrepancy of hours in the new UI Timesheet

Document ID : KB000117262
Last Modified Date : 16/10/2018
Show Technical Document Details
A user is reviewing a Submitted TimeSheet in the New UI (Review and Approve).
The TOTAL amount of hours displayed is higher than the sum of the hours for each Task.
The Detailed Timesheet also dispays the lower number of hours.

User-added image
Why there is a different number of hours being displayed on the Timesheet and on the Detailed Timesheet?
CA PPM 15.5
This might happen if the user submitting the Timesheet is using the old UI to fill and submit the Timesheet.
The old UI allows to enter time for Incidents, whilst the new UI does not support this function.

The detailed Timesheet on the new UI displays just the hours associated to the Tasks, but the Timesheet is displaying the number of hours associated to the Timesheet being submitted on the Classic UI (including the hours being reported on Incidents).
Additional Information:
Incidents are not supported in the new UI TimeSheets.
If using incidents time tracking,  we do not recommend to turn on the new Timesheets.