diff --git a/modules/ticket/back/models/specs/ticket-service.spec.js b/modules/ticket/back/models/specs/ticket-service.spec.js
new file mode 100644
index 000000000..0edd296c6
--- /dev/null
+++ b/modules/ticket/back/models/specs/ticket-service.spec.js
@@ -0,0 +1,65 @@
+/* eslint max-len: ["error", { "code": 150 }]*/
+const {models} = require('vn-loopback/server/server');
+
+fdescribe('ticketService model ', () => {
+    const originalTicketFk = 1;
+    const refundTicketFk = 11;
+
+    let tx;
+    let opts;
+    let ticketService;
+
+    beforeEach(async() => {
+        tx = await models.Sale.beginTransaction({});
+        opts = {transaction: tx};
+
+        ticketService = await models.TicketService.create({
+            ticketFk: refundTicketFk,
+            description: 'test',
+            quantity: 1,
+            price: 100,
+            taxClassFk: 1,
+            ticketServiceTypeFk: 1
+        }, opts);
+    });
+
+    afterEach(async() => {
+        await tx.rollback();
+    });
+
+    describe('TicketService', () => {
+        it('should allow updating description and quantity for non-refund tickets', async() => {
+            await ticketService.updateAttributes({
+                ticketServiceTypeFk: 2,
+                quantity: 5
+            }, opts);
+
+            const updated = await models.TicketService.findById(ticketService.id, null, opts);
+
+            expect(updated.description).not.toBe('test');
+            expect(updated.quantity).toBe(5);
+        });
+
+        it('should only allow updating description for refund tickets', async() => {
+            await models.TicketRefund.create({
+                refundTicketFk,
+                originalTicketFk
+            }, opts);
+
+            await ticketService.updateAttributes({
+                ticketServiceTypeFk: 2
+            }, opts);
+
+            try {
+                await ticketService.updateAttributes({
+                    ticketServiceTypeFk: 3,
+                    quantity: 5
+                }, opts);
+
+                fail('Should have thrown error');
+            } catch (e) {
+                expect(e.message).toBe('Only description can be modified in refund tickets');
+            }
+        });
+    });
+});
diff --git a/modules/ticket/back/models/ticket-service.js b/modules/ticket/back/models/ticket-service.js
index 209727ee4..77479498a 100644
--- a/modules/ticket/back/models/ticket-service.js
+++ b/modules/ticket/back/models/ticket-service.js
@@ -10,9 +10,18 @@ module.exports = Self => {
             const isLocked = await models.Ticket.isLocked(ticketId);
             if (isLocked)
                 throw new UserError(`The current ticket can't be modified`);
+
+            const isRefund = await models.TicketRefund.findOne({
+                where: {refundTicketFk: ticketId}
+            }, {
+                transaction: ctx.options.transaction
+            });
+
+            if (isRefund && ctx.data && Object.keys(ctx.data).some(field => field !== 'ticketServiceTypeFk'))
+                throw new UserError('Only description can be modified in refund tickets');
         }
 
-        if (changes && changes.ticketServiceTypeFk) {
+        if (changes?.ticketServiceTypeFk) {
             const ticketServiceType = await models.TicketServiceType.findById(changes.ticketServiceTypeFk);
             changes.description = ticketServiceType.name;
         }