HUD HCV Guidebook § 7.2.2

If the primary verification system does not confirm eligible immigration status, or if the primary verification
system verifies immigration status that is ineligible for assistance under a Section 214 covered program, the
PHA must36 attempt secondary verification, a manual records check by CIS. The PHA must37 submit a request
for secondary verification to CIS within 10 days of receiving results of the primary verification. To request
secondary verification, the PHA will forward photocopies of the original required documents with the form G-
845S Document Verification Request. or such other form specified by the.
If secondary verification fails, the PHA must38 notify the family in accordance with the notification
requirements described in Sections 7.4.1 and 11.2 of this chapter.