Fannie Mae Selling Guide Subpart C3: Mortgage-Backed Securities (MBS)
This subpart describes Fannie Mae's requirements for pooling mortgages that will serve as the underlying asset for MBS, which includes UMBS.
Fannie Mae publishes the full text of this section: Fannie Mae Single Family Selling Guide on the Fannie Mae website. Zeitro Strata answers questions about it with the passage and page cited.
Guideline text quoted as published by the agency. The latest published version governs. This is not an underwriting decision.