Indicates how programs are to be built by the encryptor. 1 - programsDerived (default) - programs are derived where the encryptor builds the programs internally for the specified service. The program related ECM messages and program name/info messages are derived from the service RMD data and internal schedules. This program type is typically used for subscription services. 2 - programInfoProvided - the encryptor should build the programs based on the program information provided by the controller via the <programInfo> element of the ServiceProgramReply payload. The service RMD data is still used to generate the program related ECM messages. 3 - programEcmProvided - the encryptor should use pre-built ECM program messages as provided by the controller via the <programEcm> element of the ServiceProgramReply payload. For this program type, the controller provides the schedules; however, the encryptor must default much of the program info message since not detailed program information is provided. DTA content protection encryption makes use of the 'programEcmProvided' program type since the ECM messages cannot be derived by the encryptor. 4 - programInfoAndEcmProvided - the encryptor should build the programs based on both the program information and pre-built ECM messages provided by the controller via the <programInfo> and <programEcm> elements of the ServiceProgramReply payload.