I'm writing a RESTlet that will allow my team to create Cash Sales from a local app. For some reason, though, the script fails to provide any subsidiary to pick from. I must select a subsidiary because I must select a location.

I've tried using getSelectOptions, since that field is the select type, and it returns no options. I have also tried changing the record to a sales order, but it made no difference.

The script is running, for debug purposes, as my user with admin rights, so permissions shouldn't be an issue.

/**
 * @NApiVersion 2.1
 * @NScriptType Restlet
 */
define(['N/log', 'N/record', 'N/search'],
    /**
     * @param {log} log
     * @param {record} record
     * @param {search} search
     */
    (log, record, search) => {

        /**
         * @typedef RequestedOrderItem
         * @prop {string} upc The UPC of the item to add
         * @prop {number} quantity The quantity of the item to add
         */

        /**
         * @typedef RequestedOrder
         * @prop {number} customer The internal ID of the customer to assign the order to
         * @prop {RequestedOrderItem[]} items The items to add to the order
         */

        const posLog = (message, title="") => {
            log.debug({
                title: "POS Receiver"+(title ? ` - ${title}` : ""),
                details: message
            });
        }

        /**
         * Defines the function that is executed when a POST request is sent to a RESTlet.
         * @param {RequestedOrder} requestBody - The HTTP request body; request body is passed as a string when request
         *     Content-Type is 'text/plain' or parsed into an Object when request Content-Type is 'application/json' (in which case
         *     the body must be a valid JSON)
         * @returns {string | Object} HTTP response body; returns a string when request Content-Type is 'text/plain'; returns an
         *     Object when request Content-Type is 'application/json' or 'application/xml'
         * @since 2015.2
         */
        const post = (requestBody) => {
            const order = requestBody;
            
            const cashSale = new record.create({
                type: record.Type.SALES_ORDER,
                isDynamic: true
            });

            const locationField = cashSale.getField({
                fieldId: "location"
            });
            const locationOptions = locationField.getSelectOptions();

            const subsidiaryField = cashSale.getField({
                fieldId: "subsidiary"
            });
            const subsidiaryOptions = subsidiaryField.getSelectOptions();
            
            posLog(subsidiaryOptions, "Subsidiary options");
            // posLog(locationOptions, "Location options"); // Won't show any options until subsidiary is selected

            // This fails with INVALID_FLD_VALUE since there are no valid values
            // cashSale.setValue({
            //     fieldId: "subsidiary",
            //     value: 2 // This IS the subsidiary ID
            // });
            // cashSale.setValue({
            //     fieldId: "location",
            //     value: 4 // This IS the location ID
            // });

            // cashSale.save();

            return {success: true};
        }

        return { post };

    });

I use the exact same subsidiary and location setting with a RESTlet that creates Assembly Builds and it works there.

Is there some obvious reason why I'm unable to select a subsidiary, and thus a location, for a cash sale?