Hi there!
Spent a lot of hours looking for a solution, but still can't figure it out.
How can I get the keys of linked issues and put them in the custom field?
I tried to do automation with one request, which is executed every day. It works well if there is one related task. If there are several of them, the second task overwrites the field with its key. For example, I took two tasks at once in the request.

If I use lookup, then it finds all the tasks in the project, but tries to write them all in one field, which is wrong.

I am sure that the solution is somewhere close, but I cannot find it yet.
I would be very grateful if someone could help.