In the Create Variable Type area click the Browse Elements icon. Use the navigator to locate the schema element type for the input variable. For example, select the ratingrequest type. Add any needed types using the Type Chooser.
Click the Import Schema File icon to import the schema. For example, import CreditRatingTypes.xsd. Also import any other required schema for your application.
In the Type Chooser dialog, select ratingrequest and click OK.