Md. Code Ann., Com. Law § 22-305
(2) If a specification materially affects the other party's performance but is not seasonably made, the other party:
An agreement that is otherwise sufficiently definite to be a contract is not invalid because it leaves particulars of performance to be specified by one of the parties. If particulars of performance are to be specified by a party, the following rules apply:
Added by Acts 2000, c. 11, § 1, eff. Oct. 1, 2000.