diff -r 0e50d10c8b6c -r fb614eb7627e iro/error.py
--- a/iro/error.py	Mon Feb 13 19:53:34 2012 +0100
+++ b/iro/error.py	Mon Feb 13 22:15:41 2012 +0100
@@ -52,8 +52,13 @@
         msg = "No valid email: '%s'"%(number)
         ValidateException.__init__(self, 702, field, msg)
 
+class OfferException(Exception):
+    pass
 
-class NoRoute(Exception):
+class NoRoute(OfferException):
+    pass
+
+class NoProvider(OfferException):
     pass
 
 class RejectRecipient(Exception):