When we create a brand new PX Policy we are receiving the following message. ' ???key: element.webservice.client.param.service.name???'. This can be seen on the Action tab of a PX Policy when "Soap queries " is selected.
This is a localization issue, as a workaround you can add the following.
Add property (element.webservice.client.param.service.name=Service Name) to \iam_im.ear\custom\resourceBundles\policyxpress_plugins.properties
Once added please cycle the application server and test again. You should notice that it populates correctly now.