diff --git a/modules/zone/back/methods/zone/deleteZone.js b/modules/zone/back/methods/zone/deleteZone.js
index a75302703..6ef663a03 100644
--- a/modules/zone/back/methods/zone/deleteZone.js
+++ b/modules/zone/back/methods/zone/deleteZone.js
@@ -1,3 +1,4 @@
+const UserError = require('vn-loopback/util/user-error');
 module.exports = Self => {
     Self.remoteMethodCtx('deleteZone', {
         description: 'Delete a zone',
@@ -52,23 +53,25 @@ module.exports = Self => {
             const promises = [];
 
             const ticketList = await models.Ticket.find(filter, myOptions);
-            const fixingState = await models.State.findOne({where: {code: 'FIXING'}}, myOptions);
-            const worker = await models.Worker.findOne({
-                where: {id: userId}
-            }, myOptions);
+            // const fixingState = await models.State.findOne({where: {code: 'FIXING'}}, myOptions);
+            // const worker = await models.Worker.findOne({
+            //     where: {id: userId}
+            // }, myOptions);
+            if (ticketList.length > 0)
+                throw new UserError('You cannot delete a zone that is being used');
 
-            await models.Ticket.rawSql('UPDATE ticket SET zoneFk = NULL WHERE zoneFk = ?', [id], myOptions);
+            // await models.Ticket.rawSql('UPDATE ticket SET zoneFk = NULL WHERE zoneFk = ?', [id], myOptions);
 
-            for (ticket of ticketList) {
-                if (ticket.ticketState().alertLevel == 0) {
-                    promises.push(models.Ticket.state(ctx, {
-                        ticketFk: ticket.id,
-                        stateFk: fixingState.id,
-                        userFk: worker.id
-                    }, myOptions));
-                }
-            }
-            await Promise.all(promises);
+            // for (ticket of ticketList) {
+            //     if (ticket.ticketState().alertLevel == 0) {
+            //         promises.push(models.Ticket.state(ctx, {
+            //             ticketFk: ticket.id,
+            //             stateFk: fixingState.id,
+            //             userFk: worker.id
+            //         }, myOptions));
+            //     }
+            // }
+            // await Promise.all(promises);
             await models.Zone.destroyById(id, myOptions);
 
             if (tx) await tx.commit();