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-rw-r--r--ipalib/exceptions.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/ipalib/exceptions.py b/ipalib/exceptions.py
index 4584c1ee..76c7da8c 100644
--- a/ipalib/exceptions.py
+++ b/ipalib/exceptions.py
@@ -63,3 +63,7 @@ class RegistrationError(IPAError):
class PrefixError(IPAError):
msg = 'class name %r must start with %r'
+
+
+class TwiceSetError(IPAError):
+ msg = '%s.%s cannot be set twice'