diff --git a/pkg/apis/output.go b/pkg/apis/output.go
index 9d760181e1..f583bacf85 100644
--- a/pkg/apis/output.go
+++ b/pkg/apis/output.go
@@ -16,6 +16,8 @@ package apis
 
 import (
 	"time"
+
+	"yunion.io/x/onecloud/pkg/httperrors"
 )
 
 type ModelBaseDetails struct {
@@ -26,7 +28,7 @@ type ModelBaseDetails struct {
 	CanDelete bool `json:"can_delete"`
 
 	// 资源不能删除的原因
-	DeleteFailReason string `json:"delete_fail_reason"`
+	DeleteFailReason httperrors.Error `json:"delete_fail_reason"`
 
 	// 资源是否可以更新, 若为false,update_fail_reason会返回资源不能删除的原因
 	// example: true
diff --git a/pkg/cloudcommon/db/db_dispatcher.go b/pkg/cloudcommon/db/db_dispatcher.go
index 747d0e58ec..ce99b26710 100644
--- a/pkg/cloudcommon/db/db_dispatcher.go
+++ b/pkg/cloudcommon/db/db_dispatcher.go
@@ -778,7 +778,7 @@ func getModelExtraDetails(item IModel, ctx context.Context, showReason bool) api
 	if err != nil {
 		out.CanDelete = false
 		if showReason {
-			out.DeleteFailReason = err.Error()
+			out.DeleteFailReason = httperrors.NewErrorFromGeneralError(ctx, err)
 		}
 	}
 	err = item.ValidateUpdateCondition(ctx)
diff --git a/pkg/httperrors/httperrors.go b/pkg/httperrors/httperrors.go
index fb46899411..2e213488f6 100644
--- a/pkg/httperrors/httperrors.go
+++ b/pkg/httperrors/httperrors.go
@@ -75,16 +75,29 @@ func SetHTTPRedirectLocationHeader(w http.ResponseWriter, location string) {
 	w.Header().Set("Location", location)
 }
 
-func HTTPError(ctx context.Context, w http.ResponseWriter, msg string, statusCode int, class string, err httputils.Error) {
-	if statusCode >= 300 && statusCode <= 400 {
-		SetHTTPRedirectLocationHeader(w, msg)
+type Error struct {
+	Code    int    `json:"code"`
+	Class   string `json:"class"`
+	Details string `json:"details"`
+}
+
+func NewErrorFromJCError(ctx context.Context, je *httputils.JSONClientError) Error {
+	err := Error{
+		Code:    je.Code,
+		Class:   je.Class,
+		Details: formatDetails(ctx, je.Data, je.Details),
 	}
+	return err
+}
 
-	// 需要在调用w.WriteHeader方法之前，设置header才能生效
-	SendHTTPErrorHeader(w, statusCode)
+func NewErrorFromGeneralError(ctx context.Context, e error) Error {
+	je := NewGeneralError(e)
+	return NewErrorFromJCError(ctx, je)
+}
 
+func formatDetails(ctx context.Context, errData httputils.Error, msg string) string {
 	var details string
-	if err.Id == "" {
+	if errData.Id == "" {
 		details = msg
 	} else {
 		var (
@@ -96,16 +109,30 @@ func HTTPError(ctx context.Context, w http.ResponseWriter, msg string, statusCod
 		} else {
 			lang = language.English
 		}
-		a := make([]interface{}, len(err.Fields))
-		for i := range err.Fields {
-			a[i] = err.Fields[i]
+		a := make([]interface{}, len(errData.Fields))
+		for i := range errData.Fields {
+			a[i] = errData.Fields[i]
 		}
-		details = P(lang, err.Id, a...)
+		details = P(lang, errData.Id, a...)
 	}
-	body := jsonutils.NewDict()
-	body.Add(jsonutils.NewInt(int64(statusCode)), "code")
-	body.Add(jsonutils.NewString(class), "class")
-	body.Add(jsonutils.NewString(details), "details")
+	return details
+}
+
+func HTTPError(ctx context.Context, w http.ResponseWriter, msg string, statusCode int, class string, errData httputils.Error) {
+	details := formatDetails(ctx, errData, msg)
+	if statusCode >= 300 && statusCode <= 400 {
+		SetHTTPRedirectLocationHeader(w, details)
+	}
+
+	// 需要在调用w.WriteHeader方法之前，设置header才能生效
+	SendHTTPErrorHeader(w, statusCode)
+
+	err := Error{
+		Code:    statusCode,
+		Class:   class,
+		Details: details,
+	}
+	body := jsonutils.Marshal(err)
 	w.Write([]byte(body.String()))
 	log.Errorf("Send error %s", details)
 	if statusCode >= 500 {
diff --git a/pkg/monitor/models/commonalert.go b/pkg/monitor/models/commonalert.go
index 0d9df4b06d..22de46a156 100644
--- a/pkg/monitor/models/commonalert.go
+++ b/pkg/monitor/models/commonalert.go
@@ -368,17 +368,18 @@ func (man *SCommonAlertManager) FetchCustomizeColumns(
 	alertRows := man.SAlertManager.FetchCustomizeColumns(ctx, userCred, query, objs, fields, isList)
 	for i := range rows {
 		rows[i].AlertDetails = alertRows[i]
-		rows[i], _ = objs[i].(*SCommonAlert).GetMoreDetails(rows[i])
+		rows[i], _ = objs[i].(*SCommonAlert).GetMoreDetails(ctx, rows[i])
 	}
 	return rows
 }
 
-func (alert *SCommonAlert) validateDeleteCondition(out *monitor.CommonAlertDetails) {
+func (alert *SCommonAlert) validateDeleteCondition(ctx context.Context, out *monitor.CommonAlertDetails) {
 	alert_type := alert.getAlertType()
 	switch alert_type {
 	case monitor.CommonAlertSystemAlertType:
+		je := httperrors.NewInputParameterError("Cannot delete system alert")
 		out.CanDelete = false
-		out.DeleteFailReason = httperrors.NewInputParameterError("Cannot delete system alert").Error()
+		out.DeleteFailReason = httperrors.NewErrorFromJCError(ctx, je)
 	default:
 	}
 }
@@ -398,8 +399,8 @@ func (alert *SCommonAlert) AllowDeleteItem(ctx context.Context, userCred mcclien
 	}
 }
 
-func (alert *SCommonAlert) GetMoreDetails(out monitor.CommonAlertDetails) (monitor.CommonAlertDetails, error) {
-	alert.validateDeleteCondition(&out)
+func (alert *SCommonAlert) GetMoreDetails(ctx context.Context, out monitor.CommonAlertDetails) (monitor.CommonAlertDetails, error) {
+	alert.validateDeleteCondition(ctx, &out)
 
 	var err error
 	alertNotis, err := alert.GetNotifications()
diff --git a/pkg/monitor/subscriptionmodel/subcription.go b/pkg/monitor/subscriptionmodel/subcription.go
index 3a3644fb1c..d30e9e85dc 100644
--- a/pkg/monitor/subscriptionmodel/subcription.go
+++ b/pkg/monitor/subscriptionmodel/subcription.go
@@ -117,7 +117,7 @@ func (self *SSubscriptionManager) PerformWrite(ctx context.Context, userCred mcc
 	sysAlerts := self.GetSystemAlerts()
 	for _, sysalert := range sysAlerts {
 		details := monitor.CommonAlertDetails{}
-		details, err := sysalert.GetMoreDetails(details)
+		details, err := sysalert.GetMoreDetails(ctx, details)
 		if err != nil {
 			log.Errorln("sysalert getMoreDetails err", err)
 			continue