The DSA_MSG_PREPARE_SCRIPT_REPLY union defines the response messages received from the IDL_DSAPrepareScript method.
typedef
[switch_type(DWORD)]
union {
[case(1)]
DSA_MSG_PREPARE_SCRIPT_REPLY_V1 V1;
} DSA_MSG_PREPARE_SCRIPT_REPLY;
V1: The version 1 response.