If you want to let your customers (requesters) select a field A, then field B and finally field C (all depending on the previous selection), I don't think you can achieve this via Automation. You should either purchase and configure a 3rd party application from the Marketplace or make sure you're on the Premium plan and leverage Assets fields in your request form.
The reason is that Automation works after an (issue) event has happened, and the action of filling in the fields of a request form doesn't constitute an action until the form has been submitted.
Check out Skills for Jira. It lets you do exactly what you are looking for if I understood you right (screenshot). You can model your levels/skills as a tree with arbitrary depth.
You can specify levels/skill requirements and see qualified experts right on the issue. You can prevent transitions for anyone except experts. You can have qualified agents pull their next ticket with a click of a button and more.
Thanks a lot,
for reply back, my requirements is
Example:
Professions(Parent value)
Private Sector jobs(child value):
1.Software engineer
2.mechanic
Government Sector jobs(child value)
1.police officer
2.Government Employ
No problem, Chaitanaya. Like this?
Thanks a lot, taking efforts to answer my question
,but unfortunately, i want above fields in JIRA SERVICE MANAGEMENT FORMS, HOW CAN I ACHIEVE IT
Ah, thanks for clarifying. Skillset fields are not supported in JSM forms at the moment, unfortunately.