examples/invoice/invoice.schema.yaml in kwalify-0.2.0 vs examples/invoice/invoice.schema.yaml in kwalify-0.3.0

@@ -1,16 +1,16 @@
 ###
 ### Kwalify schema example for invoice
 ###
-### $Rev: 18 $
-### $Release: 0.2.0 $
+### $Rev: 20 $
+### $Release: 0.3.0 $
 ### copyright(c) 2005 kuwata-lab all rights reserved.
 ###
 
 type:      map
 required:  yes
 mapping:
- "invoice":  { type: int, required: yes }
+ "invoice":  { type: int, required: yes, unique: yes }
  "date":     { type: date, required: yes }
  "bill-to":  &customer
     type:      map
     required:  yes
     mapping: