> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt ## Resource: Introduction ## Article: Introduction ## Article Link: https://dev.wix.com/docs/api-reference/business-solutions/e-commerce/orders/order-transactions/introduction.md ## Article Content: # About the Order Transactions API The eCommerce Order Transactions API concentrates records and details of payments and refunds associated with eCommerce orders. With the Order Transactions API you can: * Retrieve transactions related to a [single](https://dev.wix.com/docs/rest/business-solutions/e-commerce/orders/order-transactions/list-transactions-for-single-order.md) or [multiple](https://dev.wix.com/docs/rest/business-solutions/e-commerce/orders/order-transactions/list-transactions-for-multiple-orders.md) orders. * [Add payment records](https://dev.wix.com/docs/rest/business-solutions/e-commerce/orders/order-transactions/add-payments.md) to an order. * Listen to events when an order's [transactions are updated](https://dev.wix.com/docs/rest/business-solutions/e-commerce/orders/order-transactions/order-transactions-details-updated.md). ## Terminology * **Transaction**: Global term for a transfer of funds. This can be either one of: * **Payment**: A transfer of funds from customer to merchant/seller when making a purchase. * **Refund** A reimbursing transfer of funds back to the buyer. @sdk_package_setup