Many LOS systems support exporting to a Fannie Mae format file.
A Fannie Mae format file can be imported on the website Place Order page to pre-populate the new file screen. Click on the Import Fannie Mae 1003 File link in the upper-right corner of the page. Only one file at a time can be imported.
Use the Browse button to select the file to upload. Click on the Submit button. The Fannie Mae file will be uploaded and fill in the appropriate text fields, such as property address, borrower, etc. Any remaining fields required for order placement not provided in the import file needs to be filled in by the website user.