diff --git a/acctz/acctz.pb.go b/acctz/acctz.pb.go
index b8bc6a6..250705c 100755
--- a/acctz/acctz.pb.go
+++ b/acctz/acctz.pb.go
@@ -32,6 +32,7 @@ const (
 	SessionInfo_SESSION_STATUS_ONCE        SessionInfo_SessionStatus = 3
 	SessionInfo_SESSION_STATUS_ENABLE      SessionInfo_SessionStatus = 4
 	SessionInfo_SESSION_STATUS_IDLE        SessionInfo_SessionStatus = 5
+	SessionInfo_SESSION_STATUS_OPERATION   SessionInfo_SessionStatus = 6
 )
 
 // Enum value maps for SessionInfo_SessionStatus.
@@ -43,6 +44,7 @@ var (
 		3: "SESSION_STATUS_ONCE",
 		4: "SESSION_STATUS_ENABLE",
 		5: "SESSION_STATUS_IDLE",
+		6: "SESSION_STATUS_OPERATION",
 	}
 	SessionInfo_SessionStatus_value = map[string]int32{
 		"SESSION_STATUS_UNSPECIFIED": 0,
@@ -51,6 +53,7 @@ var (
 		"SESSION_STATUS_ONCE":        3,
 		"SESSION_STATUS_ENABLE":      4,
 		"SESSION_STATUS_IDLE":        5,
+		"SESSION_STATUS_OPERATION":   6,
 	}
 )
 
@@ -1011,7 +1014,7 @@ var file_github_com_openconfig_gnsi_acctz_acctz_proto_rawDesc = []byte{
 	0x61, 0x6d, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x30, 0x67, 0x69, 0x74, 0x68, 0x75,
 	0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6f, 0x70, 0x65, 0x6e, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67,
 	0x2f, 0x67, 0x6e, 0x73, 0x69, 0x2f, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x2f, 0x76, 0x65,
-	0x72, 0x73, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xbc, 0x04, 0x0a, 0x0b,
+	0x72, 0x73, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xda, 0x04, 0x0a, 0x0b,
 	0x53, 0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x49, 0x6e, 0x66, 0x6f, 0x12, 0x23, 0x0a, 0x0d, 0x6c,
 	0x6f, 0x63, 0x61, 0x6c, 0x5f, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x18, 0x01, 0x20, 0x01,
 	0x28, 0x09, 0x52, 0x0c, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73,
@@ -1036,7 +1039,7 @@ var file_github_com_openconfig_gnsi_acctz_acctz_proto_rawDesc = []byte{
 	0x75, 0x73, 0x65, 0x72, 0x12, 0x30, 0x0a, 0x05, 0x61, 0x75, 0x74, 0x68, 0x6e, 0x18, 0x0a, 0x20,
 	0x01, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x67, 0x6e, 0x73, 0x69, 0x2e, 0x61, 0x63, 0x63, 0x74, 0x7a,
 	0x2e, 0x76, 0x31, 0x2e, 0x41, 0x75, 0x74, 0x68, 0x6e, 0x44, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x52,
-	0x05, 0x61, 0x75, 0x74, 0x68, 0x6e, 0x22, 0xb1, 0x01, 0x0a, 0x0d, 0x53, 0x65, 0x73, 0x73, 0x69,
+	0x05, 0x61, 0x75, 0x74, 0x68, 0x6e, 0x22, 0xcf, 0x01, 0x0a, 0x0d, 0x53, 0x65, 0x73, 0x73, 0x69,
 	0x6f, 0x6e, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x12, 0x1e, 0x0a, 0x1a, 0x53, 0x45, 0x53, 0x53,
 	0x49, 0x4f, 0x4e, 0x5f, 0x53, 0x54, 0x41, 0x54, 0x55, 0x53, 0x5f, 0x55, 0x4e, 0x53, 0x50, 0x45,
 	0x43, 0x49, 0x46, 0x49, 0x45, 0x44, 0x10, 0x00, 0x12, 0x18, 0x0a, 0x14, 0x53, 0x45, 0x53, 0x53,
diff --git a/acctz/acctz.proto b/acctz/acctz.proto
index 0649aac..6003d29 100644
--- a/acctz/acctz.proto
+++ b/acctz/acctz.proto
@@ -108,6 +108,7 @@ message SessionInfo {
     SESSION_STATUS_ONCE = 3;	// simultaneous login, cmd, logout
     SESSION_STATUS_ENABLE = 4;	// change privilege level
     SESSION_STATUS_IDLE = 5;	// "watchog"
+    SESSION_STATUS_OPERATION = 6;  // "cmd"
   }
   SessionStatus status = 8;
 
@@ -264,7 +265,7 @@ message RecordResponse {
   SessionInfo session_info = 1;
 
   // The time when the system recorded this event, represented as nanoseconds
-  // since the unix epoch.
+  // since the unix epoch (Jan 1, 1970 00:00:00 UTC).
   google.protobuf.Timestamp timestamp = 2;
 
   // True, if the server's history does not include a message with the given
@@ -289,12 +290,10 @@ message RecordResponse {
 }
 
 // RecordRequest, requests a starting point for records to be sent to the
-// caller.
-// The receiver then can signal back to the sender periodic sync messages to
-// acknowledge received records.
-// The timestamp indicates the last processed Record at the caller.
+// caller. A timestamp of 0 indicates that the server should return all
+// records present to the client.
 message RecordRequest {
-  // The time when the system recorded this event represented as nanoseconds
-  // since the unix epoch.
+  // The time is represented as nanoseconds since the
+  // unix epoch (Jan 1, 1970 00:00:00 UTC).
   google.protobuf.Timestamp timestamp = 2;
 }