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.The sample acknowledgement letters for receipt of payment provided below can be used as format templates for official and personal purposes. What do you need to include in your donation acknowledgment letter? This 5-step guide will teach you how to notarize a document that requires an acknowledgement (the most common notarial act). I'm contacting you to acknowledge your payment of (amount) for (the product or service they have purchased). The following is a list of interactive forms. These forms should be downloaded and completed on your device and printed. Paper returns take approximately 30 days to process. You must serve the defendant with the summons and a copy of the papers you filed.