diff --git a/src/Order/order.schema.ts b/src/Order/order.schema.ts
index dbcb056..60325d3 100644
--- a/src/Order/order.schema.ts
+++ b/src/Order/order.schema.ts
@@ -429,7 +429,7 @@ export class OrderSchema extends PothosSchema {
             },
           });
           if (overlapSchedule) {
-            throw new Error("User has already registered for this service");
+            throw new Error("User have overlap schedule");
           }
           // check if input schedule has order id then throw error
           const schedule = await this.prisma.schedule.findUnique({