diff --git a/rhodecode/lib/exceptions.py b/rhodecode/lib/exceptions.py
--- a/rhodecode/lib/exceptions.py
+++ b/rhodecode/lib/exceptions.py
@@ -60,12 +60,17 @@ class StatusChangeOnClosedPullRequestErr
 
 class HTTPLockedRC(HTTPClientError):
     """
-    Special Exception For locked Repos in RhodeCode
+    Special Exception For locked Repos in RhodeCode, the return code can
+    be overwritten by _code keyword argument passed into constructors
     """
     code = 423
     title = explanation = 'Repository Locked'
 
     def __init__(self, reponame, username, *args, **kwargs):
+        from rhodecode import CONFIG
+        from rhodecode.lib.utils2 import safe_int
+        _code = CONFIG.get('lock_ret_code')
+        self.code = safe_int(_code, self.code)
         self.title = self.explanation = ('Repository `%s` locked by '
                                          'user `%s`' % (reponame, username))
         super(HTTPLockedRC, self).__init__(*args, **kwargs)