You do not say what type of project this is, but I'll assume it's residential. I happen to be involved in a project where this same situation arises (among other things).
Although an enclosure or curtain is not required, if one is not provided you must then analyze the entire room as a shower enclosure, with all portions exposed to water spray. If you have not addressed all other components then the 'correction' may be needed but not properly 'stated'. All wall and floor finishes need to be protected, floor sloped to ensure water spray flows to drain, cabinets non-deteriorating and with sealed openings, door/window material non-deteriorating, door perimeter properly sealed to prevent water from moving to another/adjoining space, light fixtures water-protected type, etc.... you get the idea.
If you have all of these aspects covered, then there should be no problem demonstrating you have met the 'intent' of the code (which, as stated above, does not dictate a door/curtain).