13 C.F.R. § 126.308
What happens if a HUBZone small business concern receives notice of its certification but it does not appear in DSBS as a certified HUBZone small business concern?
(a) A certified HUBZone small business concern that has received SBA's notice of certification, but does not appear in DSBS (or successor system) as a certified HUBZone small business concern within 10 business days, should immediately notify the D/HUB via email at [email protected].
(b) A certified HUBZone small business concern that has received SBA's notice of certification must appear as a certified HUBZone small business concern in DSBS (or successor system) in order to be eligible for HUBZone contracts (i.e., it cannot “opt out” of a public display in the SAM (SAM.gov) or DSBS (or successor systems)).