PMCP message wrapper. This is the root structure of any PMCP message This element, required when the PMCP message is a reply, references the request and communicates its status Declaration of the transport streams managed by the system and definition of their global parameters. Declaration of the "virtual channels" managed by the system and definition of their branding and tuning parameters. List of shows used in the program guides. Has no PSIP equivalent. Program guide information for regular TV and radio services. Data program guide information for regular TV service. Information about the transport protocol associated with ACAP data broadcast service Parameters used to compute the System Time Table (A/65B 6.1), with the exception of the time itself, which is communicated using other protocols than PMCP. Definition of the parental rating system for multiple regions as carried in the RRT (A/65B 6.4) System-level PMCP-private information unique number assigned to the message by its originating system Device name of the originating system of the message Type of the originating system (see ATSC code point registry) Device name of the intended destination for the message Date and time of generation of the message Message type This element, required when the PMCP message is a reply, references the request and communicates its status id of the request message Originating system of the request message Type of the originating system for the request message Intended destination for the request message Date and time of generation of the request message Indicates the result of processing the request Possible message types This message is for information only and no reply is expected A reply to this message is expected This message is a reply to a previous request. It contains a PmcpReply element.