I need to restrict Severity of the tickets based on the ticket type

[suresh babu]

How do I restrict severity of the tickets based on the ticket type, for example Severity of "Critical" or " Blocker" should not be assigned to a ticket of type enquiry or service request.

[Trudy Claspill]

Hello @suresh babu 

Welcome to the Atlassian community.

For what type of project do you want to implement this? Get that information from the Type column on the View All Projects page under the Projects menu.

At what point do you want to apply this restriction? Should it be applied when the issue is created? Should it be applied if somebody tries to edit the severity field?

If this is for a Service Management project:

• Do you allow customers to select a severity when they are creating a support ticket?
• Would you want to apply this based on Issue Type or Request Type?

Would this restriction apply to all users that have the ability to create issues and edit issues, without exception? Or can you think of cases where an exception should be allowed?

Are you willing to acquire a third party app if that is the only solution that will fulfill your requirements? 

Do you happen to already have the ScriptRunner Behaviours app?