When Fannie Mae completes its final claim analysis for an FHA mortgage loan, it will notify the servicer if one of the following applies:
the servicer owes Fannie Mae any money, or
the servicer must purchase the property from Fannie Mae as the result of HUD’s refusal to accept conveyance of the property or outright denial of the claim.
Within 30 days after the date of Fannie Mae's notification, the servicer must resolve the issue or send Fannie Mae any money it owes.
For more information please see: E-4.5-02: Filing MI Claims for FHA Mortgage Loans