I want to prevent users from creating an issue in Jira (i.e. using the '+' icon) and force them to use the portal. I only want this to apply to some issue types. This is because the portal forces a request type to be specified, along with hidden field settings and mandatory fields dependent on the request type.
I know that I can change permissions to prevent users from being able to create an issue, but this applies to all issue types.
I have access to ScriptRunner and Automation for Jira. I have tried to write a Validator on the Create transition to inspect the issue properties, but this appears to be not available until after the issue has been created.
Does anyone have any ideas as to how to do this please?