WITNESS my hand and official seal. Signature. (Seal). A notary public or other officer completing this certificate verifies only the identity of the individual.An effective donor stewardship program acknowledges a gift in writing in a timely, accurate, and gracious manner. Every gift to UC San Diego is acknowledged. The certificate of acknowledgment (PDF) must be in the form set forth in California Civil Code section 1189. What do you need to include in your donation acknowledgment letter? I am pleased to acknowledge, with thanks, your June gift to the campus through the San Diego Foundation. Your contribution to men's basketball makes a. The sample acknowledgement letters for receipt of payment provided below can be used as format templates for official and personal purposes. An acknowledgement agreement is a legal document formalizing some agreement between parties, similar to a memorandum of understanding.