Restrict create issues based on issue type

[Ramaiah Pendli]

Hello

We would like to know, How to restrict users creating issues in JIRA based on issue type ?

For example: we wish to allow users creating Defects but not Defect Task. 

Is it possible ? If so, How to achieve the same ? Thanks 

[C]

without plugins, users can create a separate workflow for each issue type and place conditions on who can create the issue. 

if you have scripting plugins installed, you can write a script to check the conditions / validations to determine who can create issues.

[Bob Swift]

You can use a Conditioned validator on the create issue transition to prevent the creation based on your condition (issue type not Defect Task). 

[Joe Pitt]

There are some work arounds using scripting, but nothing in the base product. The work around I'm aware of still allows them to try to create it then stops the creation so it isn't very user friendly. I suggest searching the marketplace. There may be a new plugin since the last time I looked