diff --git a/src/components/pages/purchase/form/PurchaseRequestForm.tsx b/src/components/pages/purchase/form/PurchaseRequestForm.tsx
index 5f15e54e..0f7b7225 100644
--- a/src/components/pages/purchase/form/PurchaseRequestForm.tsx
+++ b/src/components/pages/purchase/form/PurchaseRequestForm.tsx
@@ -164,12 +164,7 @@ const PurchaseRequestForm = ({
     isLoadingOptions: isLoadingAreas,
   } = useSelect(AreaApi.basePath, 'id', 'name', 'search');
 
-  const {
-    inputValue: locationSelectInputValue,
-    setInputValue: setLocationSelectInputValue,
-    options: locationOptions,
-    isLoadingOptions: isLoadingLocations,
-  } = useSelect(LocationApi.basePath, 'id', 'name', 'search');
+  const [locationSelectInputValue, setLocationSelectInputValue] = useState('');
 
   const {
     inputValue: warehouseSelectInputValue,
@@ -177,34 +172,12 @@ const PurchaseRequestForm = ({
     isLoadingOptions: isLoadingWarehouses,
   } = useSelect(WarehouseApi.basePath, 'id', 'name', 'search');
 
-  const warehousesUrl = `${WarehouseApi.basePath}?${new URLSearchParams({ search: warehouseSelectInputValue }).toString()}`;
-  const { data: warehouses } = useSWR(
-    warehousesUrl,
-    WarehouseApi.getAllFetcher
-  );
-
-  // ===== DATA PROCESSING =====
-  const warehouseOptions = useMemo(() => {
-    if (!isResponseSuccess(warehouses)) return [];
-
-    return (
-      warehouses?.data.map((w) => ({
-        value: w.id,
-        label: w.name,
-        area: w.area?.name,
-        location:
-          'type' in w && (w.type === 'LOKASI' || w.type === 'KANDANG')
-            ? w.location?.name
-            : undefined,
-      })) || []
-    );
-  }, [warehouses]);
-
   // ===== PRODUCT WAREHOUSE FETCHING =====
   const getProductWarehousesUrl = useCallback(() => {
     const productWarehouseParams = new URLSearchParams({
       search: productWarehouseSelectInputValue,
     });
+
     return `${ProductWarehouseApi.basePath}?${productWarehouseParams.toString()}`;
   }, [productWarehouseSelectInputValue]);
 
@@ -212,6 +185,33 @@ const PurchaseRequestForm = ({
   const { data: productWarehouses, isLoading: isLoadingProductWarehouses } =
     useSWR(productWarehousesUrl, ProductWarehouseApi.getAllFetcher);
 
+  // Filter product warehouses per item based on selected warehouse
+  const getProductWarehouseOptionsForItem = useCallback(
+    (warehouseId: number | string) => {
+      if (!isResponseSuccess(productWarehouses)) return [];
+
+      const warehouseIdNum =
+        typeof warehouseId === 'string'
+          ? parseInt(warehouseId) || 0
+          : warehouseId;
+      if (warehouseIdNum === 0) return [];
+
+      return (
+        productWarehouses?.data
+          .filter((pw) => pw.warehouse.id === warehouseIdNum)
+          .map((pw) => ({
+            value: pw.product.id,
+            label: pw.product.name,
+            product_id: pw.product.id,
+            warehouse_id: pw.warehouse.id,
+            warehouse_name: pw.warehouse.name,
+            quantity: pw.quantity,
+          })) || []
+      );
+    },
+    [productWarehouses]
+  );
+
   const productWarehouseOptions = isResponseSuccess(productWarehouses)
     ? productWarehouses?.data.map((pw) => ({
         value: pw.product.id,
@@ -281,6 +281,71 @@ const PurchaseRequestForm = ({
     },
   });
 
+  // ===== API DATA FETCHING =====
+  const locationsUrl = useMemo(() => {
+    const params = new URLSearchParams({
+      search: locationSelectInputValue,
+      ...(formik.values.area_id && formik.values.area_id > 0
+        ? { area_id: formik.values.area_id.toString() }
+        : {}),
+    });
+    return `${LocationApi.basePath}?${params.toString()}`;
+  }, [locationSelectInputValue, formik.values.area_id]);
+
+  const { data: locations, isLoading: isLoadingLocations } = useSWR(
+    locationsUrl,
+    LocationApi.getAllFetcher
+  );
+
+  const locationOptions = useMemo(() => {
+    if (!isResponseSuccess(locations)) return [];
+    return (
+      locations?.data.map((location) => ({
+        value: location.id,
+        label: location.name,
+      })) || []
+    );
+  }, [locations]);
+
+  const warehousesUrl = useMemo(() => {
+    const params = new URLSearchParams({ search: warehouseSelectInputValue });
+
+    if (formik.values.area_id && formik.values.area_id > 0) {
+      params.append('area_id', formik.values.area_id.toString());
+    }
+
+    if (formik.values.location_id && formik.values.location_id > 0) {
+      params.append('location_id', formik.values.location_id.toString());
+    }
+
+    return `${WarehouseApi.basePath}?${params.toString()}`;
+  }, [
+    warehouseSelectInputValue,
+    formik.values.area_id,
+    formik.values.location_id,
+  ]);
+
+  const { data: warehouses } = useSWR(
+    warehousesUrl,
+    WarehouseApi.getAllFetcher
+  );
+
+  const warehouseOptions = useMemo(() => {
+    if (!isResponseSuccess(warehouses)) return [];
+
+    return (
+      warehouses?.data.map((w) => ({
+        value: w.id,
+        label: w.name,
+        area: w.area?.name,
+        location:
+          'type' in w && (w.type === 'LOKASI' || w.type === 'KANDANG')
+            ? w.location?.name
+            : undefined,
+      })) || []
+    );
+  }, [warehouses]);
+
   // ===== EVENT HANDLERS =====
   const supplierChangeHandler = (val: OptionType | OptionType[] | null) => {
     const supplier = val as OptionType | null;
@@ -296,6 +361,25 @@ const PurchaseRequestForm = ({
     formik.setFieldValue('area', area);
     formik.setFieldTouched('area_id', true);
     formik.setFieldValue('area_id', (area as OptionType)?.value || 0);
+
+    // Reset area dependent fields
+    formik.setFieldValue('location', null);
+    formik.setFieldValue('location_id', 0);
+    setLocationSelectInputValue('');
+
+    // Reset area dependent fields in all purchase items
+    if (formik.values.purchase_items) {
+      formik.values.purchase_items.forEach((_, idx) => {
+        formik.setFieldValue(`purchase_items.${idx}.warehouse`, null);
+        formik.setFieldValue(`purchase_items.${idx}.warehouse_id`, '');
+        formik.setFieldValue(`purchase_items.${idx}.product_warehouse`, null);
+        formik.setFieldValue(
+          `purchase_items.${idx}.product_warehouse_id`,
+          null
+        );
+        formik.setFieldValue(`purchase_items.${idx}.product_id`, '');
+      });
+    }
   };
 
   const locationChangeHandler = (val: OptionType | OptionType[] | null) => {
@@ -304,6 +388,20 @@ const PurchaseRequestForm = ({
     formik.setFieldValue('location', location);
     formik.setFieldTouched('location_id', true);
     formik.setFieldValue('location_id', (location as OptionType)?.value || 0);
+
+    // Reset location dependent fields in all purchase items
+    if (formik.values.purchase_items) {
+      formik.values.purchase_items.forEach((_, idx) => {
+        formik.setFieldValue(`purchase_items.${idx}.warehouse`, null);
+        formik.setFieldValue(`purchase_items.${idx}.warehouse_id`, '');
+        formik.setFieldValue(`purchase_items.${idx}.product_warehouse`, null);
+        formik.setFieldValue(
+          `purchase_items.${idx}.product_warehouse_id`,
+          null
+        );
+        formik.setFieldValue(`purchase_items.${idx}.product_id`, '');
+      });
+    }
   };
 
   // Purchase Items Handlers
@@ -455,7 +553,11 @@ const PurchaseRequestForm = ({
               <SelectInput
                 required
                 label='Lokasi'
-                placeholder='Pilih Lokasi...'
+                placeholder={
+                  !formik.values.area_id
+                    ? 'Pilih Area terlebih dahulu'
+                    : 'Pilih Lokasi...'
+                }
                 value={formik.values.location}
                 onChange={locationChangeHandler}
                 options={locationOptions}
@@ -466,8 +568,8 @@ const PurchaseRequestForm = ({
                   Boolean(formik.errors.location_id)
                 }
                 errorMessage={formik.errors.location_id as string}
-                isDisabled={type === 'detail'}
-                isClearable
+                isDisabled={type === 'detail' || !formik.values.area_id}
+                isClearable={type !== 'detail' && !!formik.values.area_id}
               />
 
               <div className={type === 'detail' ? 'col-span-1' : 'col-span-2'}>
@@ -577,6 +679,18 @@ const PurchaseRequestForm = ({
                               `purchase_items.${idx}.warehouse_id`,
                               (warehouse as OptionType)?.value || 0
                             );
+                            formik.setFieldValue(
+                              `purchase_items.${idx}.product_warehouse`,
+                              null
+                            );
+                            formik.setFieldValue(
+                              `purchase_items.${idx}.product_warehouse_id`,
+                              null
+                            );
+                            formik.setFieldValue(
+                              `purchase_items.${idx}.product_id`,
+                              ''
+                            );
                           }}
                           options={warehouseOptions}
                           onInputChange={setWarehouseSelectInputValue}
@@ -618,7 +732,9 @@ const PurchaseRequestForm = ({
                                 ?.product_id || 0
                             );
                           }}
-                          options={productWarehouseOptions}
+                          options={getProductWarehouseOptionsForItem(
+                            item.warehouse_id
+                          )}
                           onInputChange={setProductWarehouseSelectInputValue}
                           isLoading={isLoadingProductWarehouses}
                           isError={
@@ -629,9 +745,13 @@ const PurchaseRequestForm = ({
                             getPurchaseItemError(idx, 'product_warehouse_id')
                               .errorMessage
                           }
-                          isDisabled={type === 'detail'}
-                          isClearable
-                          placeholder='Pilih Produk'
+                          isDisabled={type === 'detail' || !item.warehouse_id}
+                          isClearable={type !== 'detail' && !!item.warehouse_id}
+                          placeholder={
+                            !item.warehouse_id
+                              ? 'Pilih Gudang terlebih dahulu'
+                              : 'Pilih Produk'
+                          }
                           className={{
                             wrapper: 'min-w-32',
                           }}