How can I configure Project Key Index so for sub-tasks

[Nazar Dunas]

Hello! I wounder is it possible to configure sub-task Index generator so when I create a sub-task it will generate like that:
[KEY-2] Main Task
   [KEY-2.1] Sub-task 1
   [KEY-2.1] Sub-task 2
   [KEY-2.3] Sub-task 3
   [KEY-2.4] Sub-task 4

AND NOT:
[KEY-2] Main Task
   [KEY-3] Sub-task 1
   [KEY-4] Sub-task 2
   [KEY-5] Sub-task 3
   [KEY-6] Sub-task 4

How there is an option to configure that!
Thanks in advance for answering that question!

[Melbrin NGOUILOU · Accepted solution]

Hello Nazar,

As far as I know, it is not possible to customize keys in native Jira. Perhaps it's possible using a plugin?

[Melbrin NGOUILOU]

Alternatively, one solution would be to manage the key change not for sub-tickets but rather in the summary. Using automation, you could add the key of the parent ticket and then increment as the sub-tickets are created.

[Dick]

@Nazar Dunas Hi, and welcome to the Atlassian Community

As @Melbrin NGOUILOU stated, this is not possible. Moreover, it would mean finding the parent's children and determine the next index to use prior to actually creating the new sub-task. This puts an extra drag on UX performance, just to make it pretty.

Kind regards,
Dick