The connection URL for the sandbox server is: https://[server-name]
Authorization is done via service users. To access the API, a service user is required to be granted with a corresponding privilege. A user can submit API requests using either associated credentials or temporary password generated via authentication operation. To learn more about service users and end-points used for API submission, review Security Management
Request method is POST. The content-type must be set to application/x-www-form-urlencoded.
Request fields are passed within HTTPS request body (including cases with callbacks) and are required to be URL-encoded.
Response fields are passed within HTTPS response body.
Both request and response field values are passed using name1=key1&name2=key2 format.