Welcome to the community. Unfortunately, it is not possible to have cascade field with more than 2 level (parent - child) that I am aware of.
Maybe there are paid third party add-ons that you can look for in the Marketplace.
Best, Joseph Chung Yin
Jira/JSM Functional Lead, Global Infrastructure Applications Team
Hello everyone! We are very excited to announce some much needed changes to the issue create experience in JSM (the blue "create" button) at the top of the screen. We have just starte...
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