diff --git a/apps/pos_device/pos/api/v1/urls.py b/apps/pos_device/pos/api/v1/urls.py
index de64bf6..349fed7 100644
--- a/apps/pos_device/pos/api/v1/urls.py
+++ b/apps/pos_device/pos/api/v1/urls.py
@@ -1,8 +1,10 @@
 from django.urls import path, include
 from rest_framework.routers import DefaultRouter
+from .viewsets import device
 
 router = DefaultRouter()
 
 urlpatterns = [
-    path('v1/', include(router.urls))
+    path('v1/', include(router.urls)),
+    path('test_webserver', device.test_web_server, name='test_web_server'),
 ]
diff --git a/apps/pos_device/pos/api/v1/viewsets/device.py b/apps/pos_device/pos/api/v1/viewsets/device.py
index 1c8c034..329a340 100644
--- a/apps/pos_device/pos/api/v1/viewsets/device.py
+++ b/apps/pos_device/pos/api/v1/viewsets/device.py
@@ -4,12 +4,18 @@ from apps.pos_device import models as pos_models
 from rest_framework.permissions import AllowAny
 from rest_framework.decorators import action
 from rest_framework.response import Response
+from django.http.response import JsonResponse
 from common.generics import get_client_ip
 from rest_framework import viewsets
 from django.db import transaction
 from rest_framework import status
 
 
+def test_web_server(request):
+    """ testing from pos device to check server status """
+    return JsonResponse({"message": "OK"}, status=status.HTTP_200_OK)
+
+
 class POSDeviceViewSet(viewsets.ModelViewSet, POSDeviceMixin):
     device_queryset = pos_models.Device.objects.all()
     session_queryset = pos_models.Sessions.objects.all()
@@ -46,7 +52,7 @@ class POSDeviceViewSet(viewsets.ModelViewSet, POSDeviceMixin):
         organization = pos_models.Organization.objects.get(en_name=psp_name)
 
         # check if device exists
-        if 'device_identity' in request.data.keys():
+        if 'device_identity' in request.data.keys() and request.data['device_identity'] != "":
             device = self.device_queryset.filter(device_identity=request.data['device_identity']).first()
         else:
             device = self.device_queryset.filter(serial=serial).first()
diff --git a/apps/pos_device/urls.py b/apps/pos_device/urls.py
index 3fe481d..98bcb6a 100644
--- a/apps/pos_device/urls.py
+++ b/apps/pos_device/urls.py
@@ -8,5 +8,6 @@ router.register(r'', device.POSDeviceViewSet, basename='auth')
 urlpatterns = [
     path('web/', include('apps.pos_device.web.api.v1.urls')),
     path('pos/', include('apps.pos_device.pos.api.v1.urls')),
+    path('test_webserver', device.test_web_server, name='test_web_server'),
     path('auth/', include(router.urls)),
 ]
diff --git a/apps/warehouse/pos/api/v1/api.py b/apps/warehouse/pos/api/v1/api.py
index 682d94f..e3fce54 100644
--- a/apps/warehouse/pos/api/v1/api.py
+++ b/apps/warehouse/pos/api/v1/api.py
@@ -1,5 +1,9 @@
 from apps.warehouse.pos.api.v1 import serializers as warehouse_serializers
-from apps.warehouse.services.services import can_buy_from_inventory
+from apps.warehouse.services.services import (
+    can_buy_from_inventory,
+    rancher_quota_weight,
+    get_rancher_statistics
+)
 from apps.pos_device.mixins.pos_device_mixin import POSDeviceMixin
 from apps.core.mixins.search_mixin import DynamicSearchMixin
 from apps.warehouse import models as warehouse_models
@@ -64,7 +68,7 @@ class InventoryEntryViewSet(viewsets.ModelViewSet, DynamicSearchMixin, POSDevice
         # paginate & response
         page = self.paginate_queryset(available_entries)
         if page is not None:
-            serializer = self.get_serializer(page, many=True)
+            serializer = self.get_serializer(page, many=True, context={'rancher': rancher})
             return self.get_paginated_response(serializer.data)
 
 
diff --git a/apps/warehouse/pos/api/v1/serializers.py b/apps/warehouse/pos/api/v1/serializers.py
index d10ff1e..7cada61 100644
--- a/apps/warehouse/pos/api/v1/serializers.py
+++ b/apps/warehouse/pos/api/v1/serializers.py
@@ -1,3 +1,4 @@
+from apps.herd.services.services import get_rancher_statistics, rancher_quota_weight
 from apps.pos_device.pos.api.v1.serializers.device import DeviceSerializer
 from apps.herd.pos.api.v1.serializers import RancherSerializer
 from apps.warehouse.exceptions import (
@@ -47,6 +48,14 @@ class InventoryEntrySerializer(serializers.ModelSerializer):
                 'id': instance.distribution.quota.product.id,
             }
 
+        # rancher herd & live stock statistics
+        representation['rancher_statistics'] = get_rancher_statistics(self.context['rancher'])
+
+        # rancher live stock statistics by inventory entry
+        representation['rancher_quota_weight_statistics'] = rancher_quota_weight(
+            self.context['rancher'], instance
+        )
+
         return representation
 
 
diff --git a/apps/warehouse/services/services.py b/apps/warehouse/services/services.py
index 27e1d22..8f88cbe 100644
--- a/apps/warehouse/services/services.py
+++ b/apps/warehouse/services/services.py
@@ -1,5 +1,5 @@
 from apps.warehouse.models import InventoryEntry, InventoryQuotaSaleTransaction
-from apps.herd.services.services import rancher_quota_weight
+from apps.herd.services.services import rancher_quota_weight, get_rancher_statistics
 from django.db.models import Sum