Mortgage Loan Mortgage LoanMortgage debt obligation evidenced, or when made will be evidenced, by the Loan Documents, or  a mortgage debt obligation with a Fannie Mae credit enhancement. purchased by Fannie Mae that is subordinated to, and has a Mortgage Loan Origination Date Mortgage Loan Origination DateDate you fund a Mortgage Loan to the Borrower. after, the Senior Mortgage Loan Senior Mortgage LoanSenior loan purchased by Fannie Mae. that is also owned by Fannie Mae.