Not for the immigration question. TN asks whether he meets the qualification rule in the professional list entry, which a provincial licence satisfies. Whether he may practise in a particular state is a separate matter governed by that state's own licensing board.
Two licences, two separate decisions
Hypothetical example: a Grand Bay-Westfield surveyor is told by the U.S. firm's office manager that he cannot apply until he has passed that state's exam. The two requirements are being confused.
The immigration test is whether his credentials match the Land Surveyor entry, and a provincial licence is one of the accepted ways to meet it, alongside a baccalaureate degree. The state licensing question decides what he may sign, seal and hold himself out as, and it applies to any employee regardless of citizenship or status. The practical consequence is that his duties for the first year may be narrower than his title at home, and the employer letter should describe those narrower duties honestly.
An application that claims sealed professional output he cannot lawfully produce invites a refusal that has nothing to do with his qualifications.