Section 3009.570-4 - Solicitation provision and contract clause(a) Use the provision at (HSAR) 48 CFR 3052.209-74 , Limitations on Contractors Acting as Lead System Integrators, in solicitations for the acquisition of a major system when the acquisition strategy envisions the use of a lead system integrator.(b) Use the clause at (HSAR) 48 CFR 3052.209-75 , Prohibited Financial Interests for Lead System Integrators-(1) In solicitations that include the provision at (HSAR) 48 CFR 3052.209-74 ; and(2) In contracts when the contractor will fill the role of a lead system integrator for the acquisition of a major system. 75 FR 41099 , July 15, 2010