Magento – OnePage Checkout Page Error – Free Shipping error : “Please specify a shipping method”

My condition, free shipping for selected zip-code/postal code,
range is, from 600003 to 600151

I am using Shopping Cart Price Rule, my workout

Note : Shopping Cart Price Rule condition Matching still alert open

I am using Multistore

How can i solve this error.

Note: Log Error

2018-05-17T10:48:21+00:00 ERR (3): 
Mage_Core_Exception: Please specify a shipping method. in /home/abc/public_html/app/Mage.php:595
Stack trace:
#0 /home/abc/public_html/app/code/core/Mage/Sales/Model/Service/Quote.php(303): Mage::throwException('Please specify ...')
#1 /home/abc/public_html/app/code/core/Mage/Sales/Model/Service/Quote.php(222): Mage_Sales_Model_Service_Quote->_validate()
#2 /home/abc/public_html/app/code/core/Mage/Sales/Model/Service/Quote.php(238): Mage_Sales_Model_Service_Quote->submitNominalItems()
#3 /home/abc/public_html/app/code/core/Mage/Checkout/Model/Type/Onepage.php(812): Mage_Sales_Model_Service_Quote->submitAll()
#4 /home/abc/public_html/app/code/core/Mage/Checkout/controllers/OnepageController.php(604): Mage_Checkout_Model_Type_Onepage->saveOrder()
#5 /home/abc/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Checkout_OnepageController->saveOrderAction()
#6 /home/abc/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('saveOrder')
#7 /home/abc/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#8 /home/abc/public_html/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#9 /home/abc/public_html/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#10 /home/abc/public_html/index.php(87): Mage::run('', 'store')
#11 {main}