diff --git a/domain/page/endpoint.go b/domain/page/endpoint.go
index 84b4ba63..e3d530b5 100644
--- a/domain/page/endpoint.go
+++ b/domain/page/endpoint.go
@@ -1265,6 +1265,7 @@ func (h *Handler) FetchPages(w http.ResponseWriter, r *http.Request) {
 
 		if process {
 			d := page.BulkRequest{}
+			d.ID = fmt.Sprintf("container-%s", p.RefID)
 			d.Page = p
 
 			for _, m := range meta {
diff --git a/model/page/page.go b/model/page/page.go
index 84e68aab..b0e5c485 100644
--- a/model/page/page.go
+++ b/model/page/page.go
@@ -125,6 +125,7 @@ type LevelRequest struct {
 // BulkRequest details page, it's meta, pending page changes.
 // Used to bulk load data by GUI so as to reduce network requests.
 type BulkRequest struct {
+	ID      string        `json:"id"`
 	Page    Page          `json:"page"`
 	Meta    Meta          `json:"meta"`
 	Pending []PendingPage `json:"pending"`