diff --git a/cmd/Open-IM-SDK-Core b/cmd/Open-IM-SDK-Core
index 3b9c0d84d..1667b0f4e 160000
--- a/cmd/Open-IM-SDK-Core
+++ b/cmd/Open-IM-SDK-Core
@@ -1 +1 @@
-Subproject commit 3b9c0d84d43d45c2a73b56a3c3510f86b67ff9bb
+Subproject commit 1667b0f4e205fc4ed7c690ab55b662087d61c277
diff --git a/config/config.yaml b/config/config.yaml
index f1fa4fb78..b638b8c5f 100644
--- a/config/config.yaml
+++ b/config/config.yaml
@@ -636,7 +636,7 @@ notification:
   #####################conversation#########################
   conversationOptUpdate:
     conversation:
-      reliabilityLevel: 2
+      reliabilityLevel: 1
       unreadCount: false
       offlinePush:
         switch: true
diff --git a/internal/api/manage/management_chat.go b/internal/api/manage/management_chat.go
index c7837c5c9..7a1876c83 100644
--- a/internal/api/manage/management_chat.go
+++ b/internal/api/manage/management_chat.go
@@ -460,7 +460,7 @@ type RevokeElem struct {
 }
 type OANotificationElem struct {
 	NotificationName    string      `mapstructure:"notificationName" json:"notificationName" validate:"required"`
-	NotificationFaceURL string      `mapstructure:"notificationFaceURL" json:"notificationFaceURL" validate:"required"`
+	NotificationFaceURL string      `mapstructure:"notificationFaceURL" json:"notificationFaceURL"`
 	NotificationType    int32       `mapstructure:"notificationType" json:"notificationType" validate:"required"`
 	Text                string      `mapstructure:"text" json:"text" validate:"required"`
 	Url                 string      `mapstructure:"url" json:"url"`
diff --git a/internal/rpc/conversation/conversaion.go b/internal/rpc/conversation/conversaion.go
index 9ea7efcc0..77fc58e63 100644
--- a/internal/rpc/conversation/conversaion.go
+++ b/internal/rpc/conversation/conversaion.go
@@ -70,6 +70,9 @@ func (rpc *rpcConversation) ModifyConversationField(c context.Context, req *pbCo
 		err = imdb.UpdateColumnsConversations(haveUserID, req.Conversation.ConversationID, map[string]interface{}{"ex": conversation.Ex})
 	case constant.FieldAttachedInfo:
 		err = imdb.UpdateColumnsConversations(haveUserID, req.Conversation.ConversationID, map[string]interface{}{"attached_info": conversation.AttachedInfo})
+	case constant.FieldUnread:
+		err = imdb.UpdateColumnsConversations(haveUserID, req.Conversation.ConversationID, map[string]interface{}{"unread_count": conversation.UnreadCount})
+
 	}
 	if err != nil {
 		log.NewError(req.OperationID, utils.GetSelfFuncName(), "UpdateColumnsConversations error", err.Error())
diff --git a/pkg/common/constant/constant.go b/pkg/common/constant/constant.go
index 8c6c45ec0..3edcd0f21 100644
--- a/pkg/common/constant/constant.go
+++ b/pkg/common/constant/constant.go
@@ -252,6 +252,7 @@ const (
 	FieldGroupAtType   = 5
 	FieldIsNotInGroup  = 6
 	FieldEx            = 7
+	FieldUnread        = 8
 )
 
 const (