An acknowledgment is one of the most common types of notarial acts, but it often confuses Notaries. Here are 5 steps to performing an acknowledgment.This 5-step guide will teach you how to notarize a document that requires an acknowledgement (the most common notarial act). This article and video will show Notaries to fill out each part of a notarial certificate, and common mistakes to avoid. Download a template here. Order your Massachusetts Acknowledgement Notary Stamp as a traditional wood-handle, self-inking, or pre-inked stamp and enter the required information.