1.6 Applicability Statement
This protocol is applicable for DC to PDC (within the same domain) communication and for RODC to DC (within the same domain) communication. The message processing for the NetrLogonSendToSam method (as specified in [MS-NRPC] section 3.5.4.8.4) enforces that this protocol is used only for communication from a non-PDC DC to a PDC, or from an RODC to a DC.