ITU-T J.380.2 describes the Digital Program Insertion Advertising Systems Interfaces' core messaging and data types using extensible markup language (XML), XML Namespaces, and XML Schema. Core messaging includes the extensible message schemas, the common J.380 message attributes, and the required J.380 messages. The core data types are XML attributes and XML elements which may be used in any J.380.x message element or within a J.380.x element definition.