I am a JIRA BA for a large ERP program where trying to solve the beloe issue to support the program. Currently the team is hybrid agile
The organisation got 4 levels of JIRA hirerachy (Initiative, Epic, Story/Task, Sub-task) where currently all these 4 levels were utilised, now as they get in to build phase they may need atleast 2 more levels deeper below subtask to maintain their end to end tracebility.
here is current strcuture and proposed or structure required
I know JIRA won't any other levels below sub-task, would like get to other alternative suggestions to achieve the similar output. Also, there is lot of reporting that exists today in design phase based on current structure.