13 C.F.R. § 128.401
(d) Multiple Award Contracts—(1) VOSB or SDVOSB status. With respect to Multiple Award Contracts, orders issued against a Multiple Award Contract, and Blanket Purchase Agreements issued against a Multiple Award Contract:
(i) SBA determines a VOSB or SDVOSB's eligibility for the underlying Multiple Award Contract as of the date a business concern certifies its status as a certified VOSB or SDVOSB as part of its initial offer or response which includes price, unless the firm was required to recertify under paragraph (e) of this section.
(e) Recertification.
(1) A Participant that qualifies as a VOSB or SDVOSB at the time of initial offer response which includes price, including a Multiple Award Contract, is generally considered to be a VOSB or SDVOSB throughout the life of that contract. This means that if a VOSB or SDVOSB is certified at the time of initial offer for a Multiple Award Contract, then it will be considered a VOSB or SDVOSB for each order issued against the contract, unless a contracting officer requests a new VOSB or SDVOSB eligibility review in connection with a specific order. Where a concern is later decertified from the Veteran-Owned Small Business Contracting Program, the procuring agency may exercise options and still count the award as an award to a VOSB or SDVOSB. For a Multiple Award Contract, a concern that has been decertified from the Veteran-Owned Small Business Contracting Program may still be issued orders as a VOSB or SDVOSB unless the contracting officer requests recertification of VOSB or SDVOSB status in connection with the order. However, the following exceptions apply to this paragraph (e)(1):
(2) For the purposes of VOSB or SDVOSB contracts (including Multiple Award Contracts) with durations of more than five years (including options), a contracting officer must request that a business concern recertify its VOSB or SDVOSB status no more than 120 calendar days prior to the end of the fifth year of the contract, and no more than 120 calendar days prior to exercising any option. If the business is unable to recertify its status as a certified VOSB or SDVOSB, the procuring agency may no longer be able to count the options or orders issued pursuant to the contract, from that point forward, towards its VOSB or SDVOSB goals.
(g) Ostensible subcontractor. Where a subcontractor that is not a certified VOSB or SDVOSB will perform the primary and vital requirements of a VOSB or SDVOSB contract, or where a VOSB or SDVOSB prime contractor is unduly reliant on one or more small businesses that are not certified VOSBs or SDVOSBs to perform the VOSB or SDVOSB contract, the prime contractor is not eligible for award of that VOSB or SDVOSB contract.