diff --git a/server/routers/dry-wash/model/order.js b/server/routers/dry-wash/model/order.js
index 2939822..84f21a5 100644
--- a/server/routers/dry-wash/model/order.js
+++ b/server/routers/dry-wash/model/order.js
@@ -29,6 +29,8 @@ const schema = new Schema({
         required: true
     },
     orderNumber: {
+        type: String,
+        unique: true
     },
     status: {
         type: String,