D.C. Mun. Regs. tit. 27, § 2102
2102.1 The use of District requirements contracts shall be mandatory for all District agencies listed under the contract as using agencies.
2102.2 When goods or services are available under a District requirements contract, a contracting officer shall not:
(a) Solicit bids, proposals, quotations, or otherwise test the market solely for the purpose of seeking alternative sources to the requirements contract; or
(b) Request formal or informal quotations from other contractors for the purpose of making price comparisons.
SOURCE: Final Rulemaking published at 35 DCR 1516 (February 26, 1988); as amended by Final Rulemaking published at 62 DCR 9255 (July 3, 2015).