When you want to include an XSL schema definition (XSD) as a Complex type context variable for use in your business process, first import the .xsd into your project.
After importing, you must verify that no unresolved references exist in the XML schema.
To import XSDs:
In the Orchestration Design Perspective, select File>Import from the menu bar to open the Import Wizard.
To import an XML schema, select Schema Resource Types and click Next.
Follow the instructions
in the dialog boxes that follow to browse for an xsd file and place its
contents in the appropriate project folder.
When you click Finish, the .xsd file is imported into your business
process and placed in the folder that you selected.
Add the .xsd file as a Complex type context variable to your project.