diff --git a/CHANGES.txt b/CHANGES.txt
index 91c66db..e6be9a4 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1 +1,2 @@
-v0.1.0, 20 February 2014 -- Initial release.
\ No newline at end of file
+v0.1.0, 20 February 2014 -- Initial release.
+v0.1.1, 18 July 2014 -- Parameter Update.
diff --git a/MANIFEST b/MANIFEST
index 9b0f45d..5e44865 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -1,6 +1,5 @@
 # file GENERATED by distutils, do NOT edit
-CHANGES.txt
-README.txt
+README.md
 setup.py
 payzippysdk/ChargingRequest.py
 payzippysdk/ChargingResponse.py
diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..efa752e
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1 @@
+include *.md
diff --git a/dist/PayZippySDK-0.1.1.tar.gz b/dist/PayZippySDK-0.1.1.tar.gz
new file mode 100644
index 0000000..d968caa
Binary files /dev/null and b/dist/PayZippySDK-0.1.1.tar.gz differ
diff --git a/payzippysdk/ChargingRequest.py b/payzippysdk/ChargingRequest.py
index f98d7fd..454331f 100644
--- a/payzippysdk/ChargingRequest.py
+++ b/payzippysdk/ChargingRequest.py
@@ -62,6 +62,16 @@ def set_merchant_transaction_id(self, merchant_transaction_id):
     def set_transaction_amount(self, transaction_amount):
         self.request_params[Constants.TRANSACTION_AMOUNT] = transaction_amount
 
+    def set_buyer_phone_no(self, buyer_phone_no):
+        self.request_params[Constants.BUYER_PHONE_NO] = buyer_phone_no
+
+    def set_item_total(self, item_total):
+        self.request_params[Constants.ITEM_TOTAL] = item_total
+
+    def set_item_vertical(self, item_vertical):
+        self.request_params[Constants.ITEM_VERTICAL] = item_vertical
+
+
     # ===============================================
     # Optional parameters related to merchant details
     # ===============================================
@@ -88,9 +98,6 @@ def set_udf5(self, udf5):
     # Optional parameters related to buyer details
     # ============================================
 
-    def set_buyer_phone_no(self, buyer_phone_no):
-        self.request_params[Constants.BUYER_PHONE_NO] = buyer_phone_no
-
     def set_buyer_unique_id(self, buyer_unique_id):
         self.request_params[Constants.BUYER_UNIQUE_ID] = buyer_unique_id
 
@@ -160,12 +167,6 @@ def set_address_count(self, address_count):
     def set_sales_channel(self, sales_channel):
         self.request_params[Constants.SALES_CHANNEL] = sales_channel
 
-    def set_item_total(self, item_total):
-        self.request_params[Constants.ITEM_TOTAL] = item_total
-
-    def set_item_vertical(self, item_vertical):
-        self.request_params[Constants.ITEM_VERTICAL] = item_vertical
-
     def set_sms_notify_number(self, sms_notify_number):
         self.request_params[Constants.SMS_NOTIFY_NUMBER] = sms_notify_number
 
diff --git a/payzippysdk/ValidityCheck.py b/payzippysdk/ValidityCheck.py
index 679a962..16d9e5d 100644
--- a/payzippysdk/ValidityCheck.py
+++ b/payzippysdk/ValidityCheck.py
@@ -81,6 +81,16 @@ def validate_charge_params(params):
             params.get(Constants.HASH_METHOD).upper() in Constants.HASH_METHOD_REQUIREMENTS):
         raise ValueError(Constants.HASH_METHOD_INVALID)
 
+    elif not(params.get(Constants.BUYER_PHONE_NO)) or len(
+            params.get(Constants.BUYER_PHONE_NO)) > Constants.BUYER_PHONE_NO_MAXLEN:
+        raise ValueError(Constants.BUYER_PHONE_NO_INVALID)
+    elif not(params.get(Constants.ITEM_TOTAL)) or len(
+            params.get(Constants.ITEM_TOTAL)) > Constants.ITEM_TOTAL_MAXLEN:
+        raise ValueError(Constants.ITEM_TOTAL_INVALID)
+    elif not(params.get(Constants.ITEM_VERTICAL)) or len(
+            params.get(Constants.ITEM_VERTICAL)) > Constants.ITEM_VERTICAL_MAXLEN:
+        raise ValueError(Constants.ITEM_VERTICAL_INVALID)
+
     # '''
     # Check for payment method specific parameters
     # '''
@@ -123,10 +133,6 @@ def validate_charge_params(params):
             raise ValueError(Constants.EXPIRY_YEAR_INVALID)
 
     # Check for other parameters which enforce max length constraint
-    elif Constants.BUYER_PHONE_NO in param_keys and len(
-            params.get(Constants.BUYER_PHONE_NO)) > Constants.BUYER_PHONE_NO_MAXLEN:
-        raise ValueError(Constants.BUYER_PHONE_NO_INVALID)
-
     elif Constants.BUYER_UNIQUE_ID in param_keys and len(
             params.get(Constants.BUYER_UNIQUE_ID)) > Constants.BUYER_UNIQUE_ID_MAXLEN:
         raise ValueError(Constants.BUYER_UNIQUE_ID_INVALID)
diff --git a/setup.py b/setup.py
index 604f48b..4dfed39 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name='PayZippySDK',
-    version='0.1.0',
+    version='0.1.1',
     author='PayZippy',
     author_email='merchant.care@payzippy.com',
     packages=['payzippysdk'],