Md. Code, Labor and Employment § 4–215

(a) Within 10 days after the Mediation Service issues a report on a challenged ballot or objection under § 4-214 of this subtitle, a party to the consent election may make an exception to the report.

(b) Each party who makes an exception shall:

(1) submit to the Mediation Service:

(i) 4 copies of the exception; and

(ii) proof of service under item (2) of this subsection; and

(2) serve immediately a copy of the exception on each other party.