D.C. Code § 16-2103: Extinguishment or merger of cause of action.

Where, with respect to a contract specified by section 16-2101 , an action is brought against:

(1)

all the parties thereto, but service of process is had on some, only, of the defendants; or

(2)

some, only, of the parties thereto, and service of process is had on them only —