/**
 * Source of NBBO information.
 * - Tag: 2834
 * - FIX Specification type: int
 * - Mapped type: number
 * @readonly
 * @public
 */
export declare const NBBOSource: Readonly<{
    /** Not applicable
        Default if not specified. NBBO information is not applicable. NBBOEntryType(2831), NBBOPrice(2832), and NBBOQty(2833) must be omitted. */
    readonly NotApplicable: 0;
    /** Direct
        Information is retrieved directly from an exchange or other electronic execution venue. There may be a performance advantage compared to retrieving the information from a source consolidating multiple feeds. */
    readonly Direct: 1;
    /** Securities Information Processor
        The Securities Information Processor (SIP) links the U.S. markets by processing and consolidating all protected bid/ask quotes and trades from every trading venue into a single, easily consumed data feed. */
    readonly SIP: 2;
    /** Hybrid
        A combination of two or more data feeds is used as NBBO source. In the context of US CAT this is used for a combination of direct and SIP feeds. */
    readonly Hybrid: 3;
}>;
export type NBBOSource = (typeof NBBOSource)[keyof typeof NBBOSource];