Hello,
You would need to remove all sub task issue types from the issue type scheme for this project. You can read more about issue type schemes here:
https://confluence.atlassian.com/adminjiracloud/adding-editing-and-deleting-an-issue-type-scheme-844500754.html
Hello Alexey,
I am getting proxy error for this.
Ok.
Basically go to the project settings -> Issue Type scheme. Then edit it, remove all subtask types and save.
In this case you will not have sub tasks anymore in your project. Jira will ask you to convert all existing sub tasks to a new issue type.
It looks like you're new here. Sign in or register to get started.