WCF services can be configured to use the XMLSerializer instead. To do that for PowerBuilder.Net
you'll need to add that option to the WCFAttributes.xml file that PowerBuilder uses to display the options in the IDE. You should find it in the following location:
<system drive>:\users\<username>\AppData\Local\Sybase directory.
If you add the following into the <Service Attributes> entries:
Then it will appear in the IDE and you can check it. Then regenerate the service. It will now use the XMLSerializer. At that point you can call it using the PowerBuilder web service client and/or the web service based DataWindow.