Use case
This calculated field returns a comma-separated list with the components of the current issue's sub-tasks.
Configuration
Create a new Calculated Text Field (by JWT) custom field and name it properly.
Providing a description will help you to identify what the custom field does but this step is optional.
Parsing mode
Select Advanced text as parsing mode.
Parser expression
Add the following expression:
toString(distinct(fieldValue(%{issue.components}, subtasks())))
Add the field to the relevant view screens.
Remember: All calculated fields are read-only and cannot be manually updated on a create or edit screen.
Check the results
Once configured and added to an issue screen, the result will look like this:
Related use cases
If you still have questions, feel free to refer to our support team.