Jira issues suddenly misses "parent" field

[ibuchanan]

@ThomasEhmann,

How can I fetch all issues for an epic?
Let’s say I have the epics name and ID, how can I get all the issues related to that epic?

You can get issues for epic with GET /rest/agile/1.0/epic/{epicIdOrKey}/issue.

To my knowledge, it is not yet possible to do that with 1 JQL query because the underlying relationships are different for team managed projects vs company managed projects.

There is the parent relationship for team-managed projects as described in this change:

Removing hierarchy level IDs from Jira cloud platform APIs

Change notice: Removing hierarchy level IDs from next-gen APIs The six-month deprecation period for these changes begins on 1 March 2021. What is changing? We are removing hierarchy level IDs and entityIDs from next-gen project APIs. We are changing database structure of Jira issue type hierarchy levels and as result they will no longer exist as standalone entities and there will be no IDs to return. There are four APIs at the moment that return these IDs: (1) Get project hierarchy v2 + (2…

And, for company managed projects, the APIs and relationships have not changed. Engineering tells me they started to roll-out the parent relationship to company-managed projects as an undocumented feature. They ran into problems so the feature has been rolled back. That’s the best explanation I can offer for your disappearing field.