XML API packet is a simple XML document included in an HTTP message body.

In fact, XML API supports two types of packets:

• request packets - formed by a client-part software and sent to the server.
• response packets - formed by the server and sent to a client. A response packet contains the execution status of the requested operation and can contain an error message if the operation fails.

The request and response packets are organized according to the XSD files corresponding to a certain group of operations.