In this subtitle the following words have the meanings indicated. “Child support order” means: any support order for a child issued by a tribunal; or an executed affidavit of support. “Party” means: the legal parent of a child; a caretaker with whom the child resides; or the Administration when: it has accepted an assignment of support under § 5–312(b)(2) of the Human Services Article; or the child has been placed in the care and custody of the State. “Tribunal” has the meaning stated in § 10–301(dd) of this title.