Ohio Rev. Code Ann. § 125.035
(B) The following programs are first requisite procurement programs that shall be given preference in the following order in fulfilling a purchase request:
(C) The following programs are second requisite procurement programs that may be able to fulfill the purchase request if the first requisite procurement programs are unable to do so:
(D) Upon receipt of a purchase request, the department of administrative services shall provide the requesting agency a notification of receipt of the purchase request. The department then shall determine whether the request can be fulfilled through a first requisite procurement program. In making the determination, the department may consult with each of the first requisite procurement programs. When the department has made its determination, it shall: