I'm working on a mortgage application and we're supposed to use the FNM 3.2 file format but I can't find much in the way of applicable resources.
Hoping someone in the community has some experience.
you can get help from https://documents.efanniemae.com/sf/technology/support/integration/integguide/data/
format of .fnm file should like
Field Number/Offset/Requirement:Field Description:Value
Line [1 ] Record ID - Envelope Header :EH EH-020 / 4/N :Institution ID : EH-030 / 10/N :Institution Name : EH-040 / 35/N :Date :20131118 EH-050 / 46/Y :Envelope Control Number :18:16:39