The DRS_MSG_GETCHGREQ_V4 structure defines the request message sent to the IDL_DRSGetNCChanges method. This message version is a superset of DRS_MSG_GETCHGREQ_V3.<27>

 typedef struct {
   UUID uuidTransportObj;
   [ref] MTX_ADDR* pmtxReturnAddress;
   DRS_MSG_GETCHGREQ_V3 V3;
 } DRS_MSG_GETCHGREQ_V4;

uuidTransportObj: The objectGUID of the interSiteTransport object that identifies the transport by which to send the reply.

pmtxReturnAddress: The transport-specific address to which to send the reply.

V3: Version 3 request.