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. Test Notes-SV Test Again Sub-bullet test1 Sub-bullet test2 refinancing a Portfolio Mortgage Loan Portfolio Mortgage LoanMortgage Loan purchased by Fannie Mae and held as of a certain date regardless of whether it is a Cash Mortgage Loan or an MBS Mortgage Loan. using streamlined underwriting per  Part III, Chapter 17: Choice Refinance Loans .