diff --git a/loopback/locale/es.json b/loopback/locale/es.json
index 507cc9003..0c624ed3d 100644
--- a/loopback/locale/es.json
+++ b/loopback/locale/es.json
@@ -266,5 +266,6 @@
 	"There is no assigned email for this client": "No hay correo asignado para este cliente",
     "This locker has already been assigned": "Esta taquilla ya ha sido asignada",
 	"Tickets with associated refunds": "No se pueden borrar tickets con abonos asociados. Este ticket está asociado al abono Nº {{id}}",
-	"Not exist this branch": "La rama no existe"
+	"Not exist this branch": "La rama no existe",
+    "This ticket cannot be signed because it has not been boxed": "Este ticket no puede firmarse porque no ha sido encajado"
 }
diff --git a/modules/ticket/back/methods/ticket-dms/saveSign.js b/modules/ticket/back/methods/ticket-dms/saveSign.js
index 9f1684539..60dd03be1 100644
--- a/modules/ticket/back/methods/ticket-dms/saveSign.js
+++ b/modules/ticket/back/methods/ticket-dms/saveSign.js
@@ -1,3 +1,5 @@
+const UserError = require('vn-loopback/util/user-error');
+
 module.exports = Self => {
     Self.remoteMethodCtx('saveSign', {
         description: 'Save sign',
@@ -46,21 +48,17 @@ module.exports = Self => {
         }
 
         async function setLocation(ticketId) {
-            if (args.signedTime) {
-                await models.Delivery.create({
-                    ticketFk: ticketId,
-                    longitude: args.location.Longitude,
-                    latitude: args.location.Latitude,
-                    dated: args.signedTime || new Date()
-                }, myOptions);
-            }
+            await models.Delivery.create({
+                ticketFk: ticketId,
+                longitude: args.location.Longitude,
+                latitude: args.location.Latitude,
+                dated: args.signedTime || new Date()
+            }, myOptions);
         }
 
         async function gestDocExists(ticketId) {
             const ticketDms = await models.TicketDms.findOne({
-                where: {
-                    ticketFk: ticketId
-                },
+                where: {ticketFk: ticketId},
                 fields: ['dmsFk']
             }, myOptions);
 
@@ -120,12 +118,13 @@ module.exports = Self => {
                     if (args.location) setLocation(args.tickets[i]);
                     await createGestDoc(args.tickets[i]);
                     await Self.rawSql(`CALL vn.ticket_setState(?, ?)`, [args.tickets[i], 'DELIVERED'], myOptions);
-                }
+                } else if (ticketState.alertLevel < 2)
+                    throw new UserError('This ticket cannot be signed because it has not been boxed');
             }
 
             if (tx) await tx.commit();
 
-            return 'Signs uploaded correctly';
+            return 'Signs uploaded successfully';
         } catch (e) {
             if (tx) await tx.rollback();
             throw e;
diff --git a/modules/ticket/back/methods/ticket-dms/specs/saveSign.spec.js b/modules/ticket/back/methods/ticket-dms/specs/saveSign.spec.js
index b640fefb8..47902e257 100644
--- a/modules/ticket/back/methods/ticket-dms/specs/saveSign.spec.js
+++ b/modules/ticket/back/methods/ticket-dms/specs/saveSign.spec.js
@@ -1,57 +1,32 @@
 const models = require('vn-loopback/server/server').models;
 
-fdescribe('TicketDms saveSign()', () => {
+describe('TicketDms saveSign()', () => {
     const FormData = require('form-data');
     const data = new FormData();
     let ctx = {req: {
         accessToken: {userId: 9},
         headers: {
             ...data.getHeaders()
-        },
-        on: (param, cb) => {}
+        }
+
     }};
 
-    it(`should not save sign if the ticket's alert level is lower than 2`, async() => {
+    it(`should throw error if the ticket's alert level is lower than 2`, async() => {
         const tx = await models.TicketDms.beginTransaction({});
         const ticketWithOkState = 12;
-
+        let error;
         try {
             const options = {transaction: tx};
             ctx.args = {tickets: [ticketWithOkState]};
 
             await models.TicketDms.saveSign(ctx, options);
-            const ticket = await models.Ticket.findById(ticketWithOkState, {fields: ['isSigned']}, options);
-            const ticketDms = await models.TicketDms.findOne({where: {ticketFk: ticketWithOkState}}, options);
-
-            expect(ticket.isSigned).toEqual(false);
-            expect(ticketDms).toEqual(null);
 
             await tx.rollback();
         } catch (e) {
+            error = e;
             await tx.rollback();
-            throw e;
         }
-    });
 
-    it(`should save sign if the ticket's alert level is greater than 2`, async() => {
-        const tx = await models.TicketDms.beginTransaction({});
-        const ticketWithPackedState = 7;
-
-        try {
-            const options = {transaction: tx};
-            ctx.args = {tickets: [ticketWithPackedState]};
-
-            await models.TicketDms.saveSign(ctx, options);
-            const ticket = await models.Ticket.findById(ticketWithPackedState, {fields: ['isSigned']}, options);
-            const ticketDms = await models.TicketDms.findOne({where: {ticketFk: ticketWithPackedState}}, options);
-
-            expect(ticket.isSigned).toEqual(true);
-            expect(ticketDms).toBeDefined();
-
-            await tx.rollback();
-        } catch (e) {
-            await tx.rollback();
-            throw e;
-        }
+        expect(error).toBeDefined();
     });
 });