/əkˈnɒlɪdʒmənt əv ˈsɜːvɪs/ – Pharse
Definition: thừa nhận đã giao (hồ sơ vụ án).
A more thorough explanation: A document signed by the defendant in a legal case that confirms they have been served with a copy of the complaint or other legal document.
Example: The defendant must sign an acknowledgement of service within 20 days of being served with the complaint.