Specific issue type ticket cannot move to done or dev complete if a custom field is not filled in.

[Deb Keene]

We have multiple issue types in a project and all the issue types share the same workflow.  I want only task and bug issue types to have to follow a rule that a custom field must be filled in before the task or bug can move to dev complete or done.  

Is it easier to create a separate workflow for the task and bug so if I set up a condition/trigger I only impact those issue types? 

Or would it be easier to set up an automation rule?  If an automation rule- would appreciate some guidance.  If I triggered on issue transitioned- the "from status" could be almost anything so not sure what to use as a trigger

[Vishal Biyani]

@Deb Keene 

in my opinion, it will be better to create a separate workflow for Task and Bug so that you can put a validator condition before the issue is transitioned for the specific issue types.

Transitioning an issue back to previous state is complicated using automation rules