import * as z from "zod/v4-mini";
import { Result as SafeParseResult } from "../../types/fp.js";
import { SDKValidationError } from "../errors/sdkvalidationerror.js";
/**
 * Specify the PO number field on the label (FedEx and UPS only).
 */
export type PoNumber = {
    /**
     * Custom prefix for PO number field (ZPL labels only). Up to 11 characters, including trailing
     *
     * @remarks
     * spaces. Empty string indicates removal of default prefix. To use the default prefix, do not include
     * this property.
     */
    prefix?: string | undefined;
    /**
     * Optional text to be printed on the shipping label for PO number. Up to 40 characters. If
     *
     * @remarks
     * this is provided, reference_2 will be ignored.
     */
    value?: string | undefined;
    /**
     * Order UPS reference fields are printed on ZPL labels. For UPS shipments, if you choose to set `ref_sort` for one reference, you must set `ref_sort` for all other supported UPS references using unique integers.
     */
    refSort?: number | undefined;
};
/** @internal */
export declare const PoNumber$inboundSchema: z.ZodMiniType<PoNumber, unknown>;
/** @internal */
export type PoNumber$Outbound = {
    prefix?: string | undefined;
    value?: string | undefined;
    ref_sort?: number | undefined;
};
/** @internal */
export declare const PoNumber$outboundSchema: z.ZodMiniType<PoNumber$Outbound, PoNumber>;
export declare function poNumberToJSON(poNumber: PoNumber): string;
export declare function poNumberFromJSON(jsonString: string): SafeParseResult<PoNumber, SDKValidationError>;
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