The Mortgagee must ensure the Employer Identification Number (EIN) of the sponsored third party originator (TPO) is entered into the Automated Underwriting System (AUS). If the Mortgagee is using an AUS that is unable to transmit the TPO’s EIN, they must enter “6999609996” in the Lender ID field. The Mortgagee may permit a sponsored TPO to enter data into the AUS. Both the Mortgagee and its TPO must ensure and verify all data entered into the AUS. The Mortgagee remains ultimately responsible for ensuring the data entered into the AUS is correct.
For more information see Handbook 4000.1 II.A.4.a.iii(A)(2) available at https://www.hud.gov/program_offices/administration/hudclips/handbooks/hsgh