<Li> Position 1--2: Product Code (e.g., single - family mortgage, ARM, Balloon, etc .) </Li> <Li> Position 3: Type of Mortgage (Ginnie Mae, Fannie Mae, Freddie Mac) </Li> <Li> Position 4--6: Coupon </Li> <Li> Position 7: Maturity </Li>

Who is responsible for issuing nsin for a security