diff --git a/src/components/pages/purchase/form/request/PurchaseRequestForm.schema.ts b/src/components/pages/purchase/form/request/PurchaseRequestForm.schema.ts
index 9b20ce0c..0872884e 100644
--- a/src/components/pages/purchase/form/request/PurchaseRequestForm.schema.ts
+++ b/src/components/pages/purchase/form/request/PurchaseRequestForm.schema.ts
@@ -35,7 +35,7 @@ type PurchaseRequestFormSchemaType = {
       label: string;
     } | null;
     product_id: number;
-    qty: number | string;
+    qty: number;
   }[];
 };
 
@@ -50,7 +50,7 @@ export type PurchaseItemSchema = {
     label: string;
   } | null;
   product_id: number;
-  qty: number | string;
+  qty: number;
 };
 
 const PurchaseItemObjectSchema: Yup.ObjectSchema<PurchaseItemSchema> =