Task coming as cancelled in Task List

I added a assignee to my task - and after that when i build and upload my Task is appearing as cancelled in Task List .

I removed the assignee - still it comes as cancelled .

– failing to understand .

Please suggest .

Jasmeen Kaur

One of the first things to look at is the Audit View of the task. The Audit View is a useful diagnostic tool that explains what rules were fired, what data changed and in what order events were processed.