How to map a screen schemes to a field

[chee cong lok]

Let say I have a issue type: Bug

Inside the issue I have two fields:

1. Bug Type
2. Customer

Inside the field 'Bug Type', there is two options: Bug A and Bug B.

If I choose Bug A, I want to force user to fill in 'Customer' field; if choose Bug B, 'Customer' field is not compulsory.

How could i do that, do I need a third part plug in or it is doable in Jira default function?

Please help, thanks.

[Josh Carolan]

This is not do-able out of the box in jira as far as I can tell unless you make Bug A and Bug B two different issue types, which is what I would recommend here. They may both be types of 'bugs', but if they have different field requirements, in Jira you should treat them as different issue types.

[chee cong lok]

Hi @Josh Carolan , thanks for your reply. 

I aware this can be done if we set Bug A and Bug B as different issue type.

However, if I insist to stick to the requirement, what option can I have? Could you recommend any third party plugin that can make this work?

[Nic Brough -Adaptavist-]

You would need the Behaviours module in Scriptrunner to be able to do this (but be aware that it is client-side, so users can bypass it, and REST ignores it)

A better approach is what Joshua recommends - two separate issue types that work differently.