The XML model is a very flexible tool, which allows you quickly to develop your model without constraints. You can check the validity of your XSM at any time.
A valid XSM conforms to the following kinds of rules:
Each complex type should have at least one attribute
Each group must contain elements, groups, group particles and/or Any
You can check your model in any of the following ways:
The Check Model Parameters dialog opens, allowing you to specify the kinds of checks to perform, and the objects to apply them to. The following sections document the XSM -specific checks available by default. For information about checks made on generic objects available in all model types and for detailed information about using the Check Model Parameters dialog, see Core Features Guide > Modeling with PowerDesigner > Objects > Checking Models.