Click on the view label, as shown on the image, and check the url. The <orderId> is an internal number in techSHIP that is used to generate various urls to extract ZPL or XML data.
http://test.techship.io/Integration/DownloadConvertedZplLabel?orderId=15734618
Download Label
http://test.techship.io/Integration/DownloadConvertedZplLabel?orderId=15734618
Display XML document
http://test.techship.io/integration/GetOrderXml?orderId=15734618
Download ZPL
http://test.techship.io/Integration/DownloadConvertedZplLabel?orderId=15734618&mode=zpl