You will need your FSA PIN and at least two references to complete your MPN. You will need at least two references to complete your promissory note.A promissory note need only be signed and does not require an acknowledgement before a notary public to be valid. When to Use a Promissory Note. The Direct Loan process will be completed online. 1 Step One, fill out details. Find top rated promissory note lawyers for Philadelphia, PA to hire. Post your legal needs and get proposals from PA financial lawyers. You will need to complete a Direct Federal Loan Master Promissory Note (MPN) and Entrance Counseling. A Master Promissory Note (MPN) must be signed prior to the disbursement of Federal Perkins or University loans to the student account.