4.1.10.2.22 EXOP_REQ Codes
The following values are request codes for extended operation.
EXOP_FSMO_REQ_ROLE (0x00000001)
EXOP_FSMO_REQ_RID_ALLOC (0x00000002)
EXOP_FSMO_RID_REQ_ROLE (0x00000003)
EXOP_FSMO_REQ_PDC (0x00000004)
EXOP_FSMO_ABANDON_ROLE (0x00000005)
EXOP_REPL_OBJ (0x00000006)
EXOP_REPL_SECRETS (0x00000007)