diff --git a/src/user_engine/factor_recovery.py b/src/user_engine/factor_recovery.py
index 503c93f..f859da5 100644
--- a/src/user_engine/factor_recovery.py
+++ b/src/user_engine/factor_recovery.py
@@ -60,6 +60,7 @@ def page(csrf, result=None, submitted=None, management_url=''):
         'factor_not_owned_by_target':'That authenticator no longer belongs to this login. Check the target.',
         'reference_conflict':'This support reference belongs to another recovery. Check the recorded operation.',
         'invalid_request':'Enter a valid login and support reference.',
+        'shared_factor_not_supported':'Recovery was refused because an authenticator is shared by multiple identities. Ask the sign-in service owner to resolve its ownership before recovery.',
         'account_not_found':'This directory login was not found. Check the exact login name.',
     }
     if failure: