Current version of Deployment Descriptor Editor have no validations for Work Item handlers. You can leave some must have field empty or put some garbage here (like ~!@#$%^&*()_+=-`[]|}{;'":./,<>?) but editor's validation will show you Green Item successfully validated. message.

All errors will be met only at Runtime in Server log (still no UI notifications).

For now can be implemented some basic validation rules:

• Resolver Type field is set
• Resolver is setup correctly (Identifier field has valid and existing type)
• Name filed is not empty and contain correct char sequence.

It have to be possible to save invalid description if user wants it, but validation button should show errors in declaration.