UPS - SOAP WebServices Not Working

Hi all,

I have started using the UPS in my application for shipment and cancellation.

I have the WSDL from the UPS.

I have imported the WSDL via Studio->Tools->addins and finish the process to get the Package implemeted in my studio.

Now the SOAP method contains a URL which is for their live system so i manually changed the URL with their Testing URL.

They are also providing the sample shipment numbers which we can use to test the cancellation process.

I am trying that shipment number to void(cancel) the shipment by call the method.

And i am facing the error as below,

<ZSOAP>zInvokeClient+205^%SOAP.WebClient.1

and below as detailed, 

ERROR #6248: SOAP response is a SOAP fault: faultcode=Client
faultstring=An exception has been raised as a result of client data.
faultactor=
detail=<err:Errors xmlns:err="http://www.ups.com/schema/xpci/1.0/error"><err:ErrorDetail><err:Severity>Hard</err:Severity><err:PrimaryErrorCode><err:Code>10002</err:Code><err:Description>The XML document is well formed but the document is not valid</err:Description><err:Digest>Authentication Header not provided.</err:Digest></err:PrimaryErrorCode></err:ErrorDetail></err:Errors>

I dont know much about webservices and neither did i made any manually coding for what i am using.

I dont know where to give the Authentication header. If anyone is familiar with UPS integration please help me.

Thanks in advance

Regards,

Arya