diff --git a/cmd/admin-handlers-users.go b/cmd/admin-handlers-users.go
index 50bb48df7..55df8ca99 100644
--- a/cmd/admin-handlers-users.go
+++ b/cmd/admin-handlers-users.go
@@ -672,8 +672,9 @@ func (a adminAPIHandlers) AddServiceAccount(w http.ResponseWriter, r *http.Reque
 		// It could be a regular user account or the root account.
 		_, isRegularUser := globalIAMSys.GetUser(ctx, targetUser)
 		if !isRegularUser && targetUser != globalActiveCred.AccessKey {
-			writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx,
-				fmt.Errorf("parent user %s does not exist. Cannot create service account", targetUser)), r.URL)
+			apiErr := toAdminAPIErr(ctx, errNoSuchUser)
+			apiErr.Description = fmt.Sprintf("Specified target user %s does not exist", targetUser)
+			writeErrorResponseJSON(ctx, w, apiErr, r.URL)
 			return
 		}
 	}
diff --git a/cmd/bucket-lifecycle.go b/cmd/bucket-lifecycle.go
index 17140f5a9..2f6c73959 100644
--- a/cmd/bucket-lifecycle.go
+++ b/cmd/bucket-lifecycle.go
@@ -374,7 +374,7 @@ func expireTransitionedObject(ctx context.Context, objectAPI ObjectLayer, oi *Ob
 			EventName:  eventName,
 			BucketName: oi.Bucket,
 			Object:     objInfo,
-			Host:       "Internal: [ILM-EXPIRY]",
+			Host:       "Internal: [ILM-Expiry]",
 		})
 
 	case expireRestoredObj:
diff --git a/cmd/data-scanner.go b/cmd/data-scanner.go
index 04448b564..607a950b5 100644
--- a/cmd/data-scanner.go
+++ b/cmd/data-scanner.go
@@ -1203,7 +1203,7 @@ func applyExpiryOnNonTransitionedObjects(ctx context.Context, objLayer ObjectLay
 		EventName:  eventName,
 		BucketName: obj.Bucket,
 		Object:     obj,
-		Host:       "Internal: [ILM-EXPIRY]",
+		Host:       "Internal: [ILM-Expiry]",
 	})
 
 	return true
diff --git a/cmd/event-notification.go b/cmd/event-notification.go
index 914e3cd90..ec7f2c0c2 100644
--- a/cmd/event-notification.go
+++ b/cmd/event-notification.go
@@ -248,6 +248,7 @@ func (args eventArgs) ToEvent(escape bool) event.Event {
 
 	respElements := map[string]string{
 		"x-amz-request-id": args.RespElements["requestId"],
+		"x-amz-id-2":       args.RespElements["nodeId"],
 		"x-minio-origin-endpoint": func() string {
 			if globalMinioEndpoint != "" {
 				return globalMinioEndpoint
@@ -255,17 +256,18 @@ func (args eventArgs) ToEvent(escape bool) event.Event {
 			return getAPIEndpoints()[0]
 		}(), // MinIO specific custom elements.
 	}
-	// Add deployment as part of
-	if globalDeploymentID != "" {
-		respElements["x-minio-deployment-id"] = globalDeploymentID
-	}
+
+	// Add deployment as part of response elements.
+	respElements["x-minio-deployment-id"] = globalDeploymentID
 	if args.RespElements["content-length"] != "" {
 		respElements["content-length"] = args.RespElements["content-length"]
 	}
+
 	keyName := args.Object.Name
 	if escape {
 		keyName = url.QueryEscape(args.Object.Name)
 	}
+
 	newEvent := event.Event{
 		EventVersion:      "2.0",
 		EventSource:       "minio:s3",
@@ -312,12 +314,13 @@ func (args eventArgs) ToEvent(escape bool) event.Event {
 }
 
 func sendEvent(args eventArgs) {
-	args.Object.Size, _ = args.Object.GetActualSize()
-
 	// avoid generating a notification for REPLICA creation event.
 	if _, ok := args.ReqParams[xhttp.MinIOSourceReplicationRequest]; ok {
 		return
 	}
+
+	args.Object.Size, _ = args.Object.GetActualSize()
+
 	// remove sensitive encryption entries in metadata.
 	crypto.RemoveSensitiveEntries(args.Object.UserDefined)
 	crypto.RemoveInternalEntries(args.Object.UserDefined)
diff --git a/cmd/handler-utils.go b/cmd/handler-utils.go
index 99b1eb6ef..99f74a13e 100644
--- a/cmd/handler-utils.go
+++ b/cmd/handler-utils.go
@@ -242,6 +242,7 @@ func extractRespElements(w http.ResponseWriter) map[string]string {
 	}
 	return map[string]string{
 		"requestId":      w.Header().Get(xhttp.AmzRequestID),
+		"nodeId":         w.Header().Get(xhttp.AmzRequestNodeID),
 		"content-length": w.Header().Get(xhttp.ContentLength),
 		// Add more fields here.
 	}
diff --git a/cmd/object-handlers-common.go b/cmd/object-handlers-common.go
index d3aa0b600..58a9d6106 100644
--- a/cmd/object-handlers-common.go
+++ b/cmd/object-handlers-common.go
@@ -374,7 +374,7 @@ func deleteObjectVersions(ctx context.Context, o ObjectLayer, bucket string, toD
 					Name:      dobj.ObjectName,
 					VersionID: dobj.VersionID,
 				},
-				Host: "Internal: [ILM-EXPIRY]",
+				Host: "Internal: [ILM-Expiry]",
 			})
 		}
 	}