/**
 * Type of Market Data update action.
 * - Tag: 279
 * - FIX Specification type: char
 * - Mapped type: string
 * @readonly
 * @public
 */
export declare const MDUpdateAction: Readonly<{
    /** New */
    readonly New: "0";
    /** Change */
    readonly Change: "1";
    /** Delete */
    readonly Delete: "2";
    /** Delete Thru */
    readonly DeleteThru: "3";
    /** Delete From */
    readonly DeleteFrom: "4";
    /** Overlay */
    readonly Overlay: "5";
}>;
export type MDUpdateAction = (typeof MDUpdateAction)[keyof typeof MDUpdateAction];