13 C.F.R. § 128.305
Can an Applicant or Participant reapply for certification after a denied certification or decertification?
An Applicant that SBA denied certification or a Participant that SBA has decertified may submit an application for certification no sooner than ninety (90) calendar days from the date of final agency decision ( i.e., the SBA decision if no appeal is filed or the decision of SBA's OHA where an appeal is filed pursuant to § 128.304) if it believes that it has overcome all of the reasons for denial or decertification and is currently eligible.