Mortgage LoanMortgage 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. that was purchased by Fannie Mae and is held as of a certain date regardless of whether it is a Cash Mortgage LoanCash Mortgage LoanMortgage Loan purchased by Fannie Mae in exchange for cash. or an MBS Mortgage LoanMBS Mortgage LoanMortgage Loan purchased by Fannie Mae in exchange for an issued MBS backed by the Mortgage Loan..