Setting up dropshipping on 1C-Bitrix

Setting Up Dropshipping on 1C-Bitrix

The store accepts orders, the supplier ships directly to the customer — the logic is simple, the implementation is not. The standard 1C-Bitrix commerce module has no built-in dropshipping support: no order routing by supplier, no real-time stock synchronization, no split payouts. All of this is assembled from modules and custom code.

Architecture Overview

A minimal dropshipping system on 1C-Bitrix rests on three elements:

1. Product → supplier binding via an infoblock property or HL block
2. Order routing — when an order is created, determine which suppliers receive which line items
3. Stock synchronization — the supplier transmits current data via API or file

Binding Products to Suppliers

Two approaches. The first is a SUPPLIER_ID property on the catalog infoblock (type "Element link" or "List"). Fast, but difficult to scale.

The second is an HL block SupplierProduct:

The HL block is more convenient: it supports multiple suppliers per product and stores purchase prices separately from retail prices.

Order Creation Event Handler

When an order is created, a handler on the OnSaleOrderSaved event splits line items by supplier and sends notifications:

// /local/php_interface/init.php
AddEventHandler('sale', 'OnSaleOrderSaved', ['\\Local\\Dropshipping\\OrderRouter', 'route']);

// /local/lib/Dropshipping/OrderRouter.php
namespace Local\Dropshipping;

use Bitrix\Main\Application;

class OrderRouter
{
    public static function route(\Bitrix\Sale\Order $order): void
    {
        $supplierItems = [];

        foreach ($order->getBasket() as $item) {
            $productId  = (int)$item->getProductId();
            $supplierId = self::getSupplierByProduct($productId);

            if ($supplierId) {
                $supplierItems[$supplierId][] = [
                    'product_id' => $productId,
                    'name'       => $item->getField('NAME'),
                    'quantity'   => $item->getQuantity(),
                    'price'      => $item->getPrice(),
                    'sku'        => self::getSupplierSku($productId, $supplierId),
                ];
            }
        }

        foreach ($supplierItems as $supplierId => $items) {
            self::notifySupplier($order, $supplierId, $items);
        }
    }

    private static function notifySupplier(\Bitrix\Sale\Order $order, int $supplierId, array $items): void
    {
        // Email notification or POST to supplier webhook
        $supplier = self::getSupplierData($supplierId);
        if (!empty($supplier['WEBHOOK_URL'])) {
            self::sendWebhook($supplier['WEBHOOK_URL'], $order, $items);
        } else {
            self::sendEmail($supplier['EMAIL'], $order, $items);
        }
    }
}

Inventory Accounting by Supplier

Each supplier gets a dedicated warehouse in b_catalog_store. Stock levels are stored in b_catalog_store_product. This makes it possible to see not only the total stock, but also the stock of a specific supplier.

// Creating a warehouse for a new supplier
$storeId = \CCatalogStore::Add([
    'TITLE'       => 'Supplier warehouse ' . $supplierId,
    'ACTIVE'      => 'Y',
    'XML_ID'      => 'supplier_' . $supplierId,
    'SORT'        => 100,
]);

Implementation Timelines