Okla. Stat. tit. 22, § 22-635: Issue on the challenge - Trying sufficiency

If the sufficiency of the facts alleged as a ground of challenge

be denied, the adverse party may except to the challenge. The

exception need not be in writing, but must be entered upon the

minutes of the court, and thereupon the court must proceed to try

the sufficiency of the challenge, assuming the facts alleged therein

to be true.