# Open API ## Docs - [Document Revision History](https://apidoc.easytransferglobal.com/doc-5662224.md): - [Overview of Study Abroad Payment API Access](https://apidoc.easytransferglobal.com/doc-3355791.md): - [API Call Address](https://apidoc.easytransferglobal.com/doc-3356019.md): - [Request for serial number generation instructions](https://apidoc.easytransferglobal.com/doc-3356111.md): - [API Request Parameter Description](https://apidoc.easytransferglobal.com/doc-3356063.md): - [API Response Parameter Description](https://apidoc.easytransferglobal.com/doc-3357291.md): - [Interface encryption and signing steps](https://apidoc.easytransferglobal.com/doc-3357352.md): - [Interface decryption and verification process](https://apidoc.easytransferglobal.com/doc-3357583.md): - Constant Description [pay_type description](https://apidoc.easytransferglobal.com/doc-3357586.md): - Constant Description [order_status description](https://apidoc.easytransferglobal.com/doc-3357587.md): - Constant Description [status_code description](https://apidoc.easytransferglobal.com/doc-3357588.md): - Constant Description [fee_type description](https://apidoc.easytransferglobal.com/doc-3357589.md): - Constant Description [attachment_type description](https://apidoc.easytransferglobal.com/doc-3357590.md): - Constant Description [country_code description](https://apidoc.easytransferglobal.com/doc-3357591.md): - Constant Description [currency_code description](https://apidoc.easytransferglobal.com/doc-3357592.md): - Constant Description [Gender Description](https://apidoc.easytransferglobal.com/doc-3357593.md): - Constant Description [ID type Description](https://apidoc.easytransferglobal.com/doc-3357594.md): - Asynchronous notification description v1 [[Successful Payment] Asynchronous notification parameter description for successful payment](https://apidoc.easytransferglobal.com/doc-3388044.md): - Asynchronous notification description v1 [Explanation of Asynchronous Notification Signature Generation Process](https://apidoc.easytransferglobal.com/doc-3388055.md): - Asynchronous notification description v2 [Asynchronous Notification Description](https://apidoc.easytransferglobal.com/doc-5683288.md): - Asynchronous notification description v2 [Asynchronous Notification Signature Generation Process](https://apidoc.easytransferglobal.com/doc-5683358.md): - Asynchronous notification description v2 [[Order Status Change] Asynchronous notification parameter description for order status change](https://apidoc.easytransferglobal.com/doc-5683216.md): ## API Docs - API [Order interface](https://apidoc.easytransferglobal.com/api-130848849.md): The server_type value is add_special_rent_order. - API [Attachment upload interface](https://apidoc.easytransferglobal.com/api-130848851.md): server_type value upload_attachment - API [Interface for obtaining payment address](https://apidoc.easytransferglobal.com/api-130848852.md): server_type value get_special_pay_url - API [Order batch query interface](https://apidoc.easytransferglobal.com/api-130848853.md): Server type value batch_special_query_order_info