diff --git a/lib/models/product_model.dart b/lib/models/product_model.dart
index e661208..1adf0c3 100644
--- a/lib/models/product_model.dart
+++ b/lib/models/product_model.dart
@@ -2,13 +2,13 @@ class ProductResponse {
   final bool success;
   final int totalData;
   final int totalPages;
-  final List<Product> product;
+  final List<Product> products;
 
   ProductResponse({
     required this.success,
     required this.totalData,
     required this.totalPages,
-    required this.product,
+    required this.products,
   });
 
   factory ProductResponse.fromJson(Map<String, dynamic> json) {
@@ -16,7 +16,7 @@ class ProductResponse {
       success: json['success'],
       totalData: json['total_data'],
       totalPages: json['total_pages'],
-      product: (json['product'] as List)
+      products: (json['products'] as List)
           .map((item) => Product.fromJson(item))
           .toList(),
     );
@@ -27,7 +27,7 @@ class ProductResponse {
       'success': success,
       'total_data': totalData,
       'total_pages': totalPages,
-      'product': product.map((item) => item.toJson()).toList(),
+      'products': products.map((item) => item.toJson()).toList(),
     };
   }
 }
@@ -85,6 +85,8 @@ class Product {
       createdAt: DateTime.parse(json['createdAt']),
       updatedAt: DateTime.parse(json['updatedAt']),
       v: json['__v'],
+      sale: json['sale'], // Nullable field
+      inventory: json['inventory'], // Nullable field
     );
   }
 
@@ -104,6 +106,8 @@ class Product {
       'createdAt': createdAt.toIso8601String(),
       'updatedAt': updatedAt.toIso8601String(),
       '__v': v,
+      'sale': sale, // Nullable field
+      'inventory': inventory, // Nullable field
     };
   }
 }
diff --git a/lib/provider/product_provider.dart b/lib/provider/product_provider.dart
index 421e9b6..2e806f7 100644
--- a/lib/provider/product_provider.dart
+++ b/lib/provider/product_provider.dart
@@ -32,7 +32,7 @@ class ProductProvider extends ChangeNotifier {
       setLoading(false);
       if (response.statusCode == 200) {
         productResponse = ProductResponse.fromJson(response.data);
-        productList = productResponse!.product;
+        productList = productResponse!.products;
         notifyListeners();
       }
     } catch (e) {
diff --git a/lib/screens/add_products_screen.dart b/lib/screens/add_products_screen.dart
index e53ca14..6877c4f 100644
--- a/lib/screens/add_products_screen.dart
+++ b/lib/screens/add_products_screen.dart
@@ -1,3 +1,4 @@
+import 'package:cheminova/models/pd_rd_response_model.dart';
 import 'package:cheminova/models/product_model.dart';
 import 'package:cheminova/provider/product_provider.dart';
 import 'package:cheminova/screens/data_submit_successfull.dart';
@@ -9,7 +10,13 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
 class AddProductsScreen extends StatefulWidget {
-  const AddProductsScreen({super.key});
+  final PdRdResponseModel distributor;
+  final String distributorType;
+  const AddProductsScreen({
+    super.key,
+    required this.distributor,
+    required this.distributorType,
+  });
 
   @override
   State<AddProductsScreen> createState() => _AddProductsScreenState();
@@ -64,9 +71,9 @@ class _AddProductsScreenState extends State<AddProductsScreen> {
               padding: const EdgeInsets.only(right: 20),
             ),
           ],
-          title: const Text(
-            'Add Products',
-            style: TextStyle(
+          title: Text(
+            widget.distributor.name,
+            style: const TextStyle(
               fontSize: 20,
               color: Colors.black,
               fontWeight: FontWeight.w400,
@@ -215,7 +222,7 @@ class _AddProductsScreenState extends State<AddProductsScreen> {
                               provider
                                   .submitSelectedProducts(
                                       "PrincipalDistributor",
-                                      "66a0e19c981736b70ed4e34e")
+                                      widget.distributor.id)
                                   .then((value) {
                                 if (value) {
                                   Navigator.push(
@@ -268,17 +275,27 @@ class _ProductBlockState extends State<ProductBlock> {
     setState(() {
       if (saleController.text.isNotEmpty &&
           inventoryController.text.isNotEmpty) {
-        int sale = int.parse(saleController.text);
-        int inventory = int.parse(inventoryController.text);
-        if (inventory > sale) {
-          errorMessage = 'Inventory should be less than or equal to sales';
+        // Check if the input can be parsed as an integer
+        if (int.tryParse(saleController.text) == null ||
+            int.tryParse(inventoryController.text) == null) {
+          errorMessage = 'Please enter valid integer value';
         } else {
-          errorMessage = null;
+          // Parse the input as integers
+          int sale = int.parse(saleController.text);
+          int inventory = int.parse(inventoryController.text);
+
+          // Validate if inventory is less than or equal to sales
+          if (inventory > sale) {
+            errorMessage = 'Inventory should be less than or equal to sales';
+          } else {
+            errorMessage = null;
+          }
         }
       } else {
-        errorMessage = null;
+        errorMessage = 'Please fill in both fields';
       }
     });
+
     return errorMessage == null;
   }
 
diff --git a/lib/screens/update_inventory_screen.dart b/lib/screens/update_inventory_screen.dart
index 782569d..386c53a 100644
--- a/lib/screens/update_inventory_screen.dart
+++ b/lib/screens/update_inventory_screen.dart
@@ -65,12 +65,21 @@ class _UpdateInventoryScreenState extends State<UpdateInventoryScreen> {
             text: 'SUBMIT',
             backgroundColor: const Color(0xff004791),
             onPressed: () {
-              Navigator.push(
-                context,
-                MaterialPageRoute(
-                  builder: (context) => const AddProductsScreen(),
-                ),
-              );
+              if(selectedDistributor == null || selectedDistributorType == null){
+                ScaffoldMessenger.of(context).showSnackBar(
+                  const SnackBar(content: Text('Please select distributor type and distributor')),
+                );
+              }else{
+                Navigator.push(
+                  context,
+                  MaterialPageRoute(
+                    builder: (context) => AddProductsScreen(
+                      distributor: selectedDistributor!,
+                      distributorType: selectedDistributorType!,
+                    ),
+                  ),
+                );
+              }
             },
           ),
         ),