# SOURECO ## Docs - 1688 API > 1688 Message Service [Order Created Message ](https://docs.soureco.com/order-created-message-9206999m0.md): - 1688 API > 1688 Message Service [Order Price Modification Message ](https://docs.soureco.com/order-price-modification-message-9207000m0.md): - 1688 API > 1688 Message Service [Transaction Payment Message ](https://docs.soureco.com/transaction-payment-message-9207001m0.md): - 1688 API > 1688 Message Service [Order Delivery Message](https://docs.soureco.com/order-delivery-message-9207002m0.md): - 1688 API > 1688 Message Service [Logistics Order Status Change](https://docs.soureco.com/logistics-order-status-change-9210481m0.md): - 1688 API > 1688 Message Service [Order Receipt Confirmation Message](https://docs.soureco.com/order-receipt-confirmation-message-9207003m0.md): - 1688 API > 1688 Message Service [Transaction Completed Message](https://docs.soureco.com/transaction-completed-message-9050616m0.md): - 1688 API > 1688 Message Service [Signature Verification](https://docs.soureco.com/signature-verification-9050617m0.md): ## API Docs - 1688 API > 1688 Product Search > API for Visual Search of Similar Products [API for Image upload](https://docs.soureco.com/api-for-image-upload-475853556e0.md): API for Image upload - 1688 API > 1688 Product Search > API for Visual Search of Similar Products [API for Visual Search of Similar Products](https://docs.soureco.com/api-for-visual-search-of-similar-products-475853558e0.md): API for Visual Search of Similar Products - 1688 API > 1688 Product Search [API for Product Keyword Search](https://docs.soureco.com/api-for-product-keyword-search-475853559e0.md): API for Product Keyword Search - 1688 API > 1688 Product Search [API for Product Detail Search](https://docs.soureco.com/api-for-product-detail-search-475853560e0.md): API for Product Detail Search - 1688 API > 1688 Product Search [API for Searching Products in a Shop](https://docs.soureco.com/api-for-searching-products-in-a-shop-491239287e0.md): API for Searching Products in a Shop - 1688 API > 1688 Logistics [API for China Domestic Shipping Cost](https://docs.soureco.com/api-for-china-domestic-shipping-cost-491242716e0.md): API for China Domestic Shipping Cost - 1688 API > 1688 Category [API for Category Search on 1688](https://docs.soureco.com/api-for-category-search-on-1688-475853561e0.md): Submit a category ID to query its category information. To obtain the complete 1688 category tree, begin from the root (0) to get all first-level IDs, then recursively traverse down to second-level and third-level categories. 1688's category system is three levels deep. - 1688 API > 1688 Order Manage [API for Creating Preview Order](https://docs.soureco.com/api-for-creating-preview-order-475853562e0.md): Preview orders only allow products from the same supplier. The API returns order discounts and validates: 1) orderability, 2) drop-shipping relation, and 3) stock, MOQ, and mixed batch rules. - 1688 API > 1688 Order Manage [API for Creating Formal Order](https://docs.soureco.com/api-for-creating-formal-order-475853563e0.md): Max 100 SKUs per order, all from the same supplier. Orders with over 50 SKUs or special cases will be split into multiple orders, returning multiple order numbers. Supports both marketplace and drop-shipping. Main/sub-account identification is based on the authorized user. - 1688 API > 1688 Order Manage [API for Canceling Formal Order](https://docs.soureco.com/api-for-canceling-formal-order-475853564e0.md): This API is applicable for canceling 1688 orders that have not yet been paid. - 1688 API > 1688 Order Manage [API for Querying Order Details](https://docs.soureco.com/api-for-querying-order-details-475853565e0.md): This API is used to obtain the detailed information of a single transaction. - 1688 API > 1688 Order Manage [API for Confirming Order Receipt](https://docs.soureco.com/api-for-confirming-order-receipt-475853566e0.md): This API is for buyers to confirm order receipt and update status to "Received". Funds are released to the seller upon confirmation. Not recommended for use. - 1688 API > 1688 Order Manage [API for Retrieving Payment Link](https://docs.soureco.com/api-for-retrieving-payment-link-475853567e0.md): For ERP payments, this API provides a cashier link for batch payment. Returns 1688 cashier URL for single orders, and Alipay cashier URL for multiple orders. - 1688 API > 1688 Order Manage [API for Auto Payment of Order ](https://docs.soureco.com/api-for-auto-payment-of-order-475853568e0.md): This API initiates automatic payment for scenarios with authorized password-free or auto-debit agreements. The system deducts the order amount automatically without user cashier confirmation.