Index: branches/features/purchaseOrders/grails-app/domain/PurchaseOrder.groovy
===================================================================
--- branches/features/purchaseOrders/grails-app/domain/PurchaseOrder.groovy	(revision 895)
+++ branches/features/purchaseOrders/grails-app/domain/PurchaseOrder.groovy	(revision 896)
@@ -3,5 +3,5 @@
     Supplier supplier
 
-    String comments
+    String comment = ""
     Date ordered
 
@@ -11,5 +11,5 @@
 
     static constraints = {
-        comments(nullable:true)
+        comment(maxSize:255)
         ordered(nullable:true)
     }