To enable the 'Punch Out' feature globally, go into Site Manager > Catalog Config > Shopping Cart and check the 'Enable Punch Out' checkbox. Check the 'Save a copy of Punch Out XML to server' check box to save a copy of the Punch Out XML generated on Punch Out to the server. The Path for saving the Punch Out XML must be configured with a valid path to save the XML. A file prefix can also be configured to append some text to the beginning of any Punch Out XML files saved.