2.1.2.8.1 Content Type Id

The ContentTypeId type is the identifier for the specified content type. The identifier is a string of hexadecimal characters. The identifier MUST be unique relative to the current site collection and site and MUST follow the pattern of prefixing a ContentTypeId with its parent ContentTypeId.

ContentTypeId MUST follow the XSD pattern specified in [MS-WSSCAML] section 2.3.1.4.