Fill out all applicable spaces in the information grid at the top of the front page of the Guarantee. When applying for an SBA 7(a) loan, you must complete SBA Form 1919.The Guarantor controls the Borrower and will financially benefit from the Loan. 4. As a material condition for the Administration to make the Loan, the. This program offers loan guarantees to lenders for their loans to rural businesses. This Secondary Participation Guaranty Agreement is a contract that details the terms and conditions of the sale of the guaranteed portion of an SBA loan. In this guide, we will discuss pros, cons, who qualifies must complete SBA Form 1919, and how to complete SBA Form 1919.