What are some minimal extensions to WSDL?

• Need Pre-conditions
  (You need to be 18 years of age to use this service)
  and Effects for each operation
  (Rent a car, ship a package, book a flight, insure a house)
• Need tags that refer to practical protocols/terms of
• Payment
  
• Cancellation
• Authentication/Authorization

With these, you can have dynamic business processes:
e-business on demand.