Thanks a lot for responding back.
Kindly refer the comment above by Jonathan Earles, what he has written is: If by any means User Task is cancelled, the DELETE_REASON_ column would have value 'cancelled...' but actually in my case, it has value : 'deleted'.
Lemme tell you steps by which we mark a User Task cancelled:
1. If I have configured a Boundary timer (attached User Task) with value of property 'timerCycles' is '1'
2. When boundary timer is hit, we simple change the value of property 'cancelActivity' (It is User task's property) to true from false using our logic, which marks the User task cancelled and we get to see User task is finished. and the ACT_HI_TASKINST table's column : "DELETE_REASON_" has value ''deleted'.
So my concern is, is Jonathan right? Shall I consider 'cancelled' or 'delete' as a value to that column when User task is cancelled?