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. with an interest rate that periodically adjusts based on an Index IndexBasis for determining an ARM Loan Gross Note Rate or entering a Streamlined Treasury Lock on a fixed rate Mortgage Loan, including any required alternative index deemed necessary by Fannie Mae because the prior Index: is no longer widely accepted; or was replaced as the index for similar… per the Note NoteInstrument evidencing a Mortgage Loan obligation, including  Form 6010 series,  any other Fannie Mae-approved note, and  all applicable addenda, schedules, and exhibits.  or Loan Documents Loan DocumentsAll Fannie Mae-approved documents evidencing, securing, or guaranteeing the Mortgage Loan. .