sub task of sub task

[jawedshaikh]

i want to create sub task of sub task if it is possible then how many level of sub task we can achieve and how?

[Nic Brough -Adaptavist- · Accepted solution]

As you're talking about subtasks, I guess you mean JIRA.  There are no levels of subtasks, you have issues and subtasks and no more layers.

[jawedshaikh]

How can i achieve this scenario 

Task1

      Subtask 1

            Sub subtask1

[Nic Brough -Adaptavist-]

You don't.  I already said that sub-tasks don't go any lower.

You could try the Structure add-on which enables it to look like there are more layers, but that's about the only (working) option I've seen.