Magento error during integration

[Saurabh_09]

Please can someone help me out with this error, tryinh to integrate with WMS 

Notice: Undefined variable: invIncrementIDs  in D:\wamp\www\outsource-projects\php55dev1\php55dev1.delivery-projects.com\khadinatural\app\code\community\Delhivery\Godam\Model\Godam.php on line 266

#0 D:\wamp\www\outsource-projects\php55dev1\php55dev1.delivery-projects.com\khadinatural\app\code\community\Delhivery\Godam\Model\Godam.php(266): mageCoreErrorHandler(8, 'Undefined varia...', 'D:\\wamp\\www\\out...', 266, Array)
#1 D:\wamp\www\outsource-projects\php55dev1\php55dev1.delivery-projects.com\khadinatural\app\code\community\Delhivery\Godam\controllers\Adminhtml\GodamController.php(148): Delhivery_Godam_Model_Godam->getPackageData('57632', '208951-KN3967')
#2 D:\wamp\www\outsource-projects\php55dev1\php55dev1.delivery-projects.com\khadinatural\app\code\core\Mage\Core\Controller\Varien\Action.php(419): Delhivery_Godam_Adminhtml_GodamController->submitGodamAction()
#3 D:\wamp\www\outsource-projects\php55dev1\php55dev1.delivery-projects.com\khadinatural\app\code\local\Mage\Core\Controller\Varien\Router\Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('submitGodam')
#4 D:\wamp\www\outsource-projects\php55dev1\php55dev1.delivery-projects.com\khadinatural\app\code\core\Mage\Core\Controller\Varien\Front.php(176): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#5 D:\wamp\www\outsource-projects\php55dev1\php55dev1.delivery-projects.com\khadinatural\app\code\core\Mage\Core\Model\App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#6 D:\wamp\www\outsource-projects\php55dev1\php55dev1.delivery-projects.com\khadinatural\app\Mage.php(683): Mage_Core_Model_App->run(Array)
#7 D:\wamp\www\outsource-projects\php55dev1\php55dev1.delivery-projects.com\khadinatural\index.php(89): Mage::run('', 'store')
#8 {main}

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[Pronto]

It means that the PHP variable you're trying to access is undeclared. There's many reasons for that most commons being that there's a typo or requested array / object / whatever returns null. This is not an error per se, unless configured so.