Issue Property Combinations
This workflow blocks users from setting specific combinations of values for fields in an issue. You can customize this workflow to prevent any combination of values you want to avoid.
Issue Properties Combinations
Block incompatible value combinations for custom fields (on-change rule)
This workflow helps to make sure that users do not create combinations of priorities and states that you want to avoid in your project.
This on-change rule checks the combination of Priority and State when an issue is created or updated. The following combinations are blocked:
Submitted and Show-stopper
Open and Unassigned