I would like to copy all the subtasks' summary to a custom field in the parent issue.
In JIRA Cloud, Lookup works so I could setup an automation and lookup + subtask and use list + smartvalues to generate this. Lookup is not available in Jira Server, I was hoping if someone has a workaround.
E.g Subtask Summaries: Subtask-1 Summary, Subtask-2 Summary , Subtask-3 Summary
Combined Summaries (Custom field in parent issue): Subtask-1 Summary, Subtask-2 Summary, Subtask-3 Summary