Caused by:

commit 96d071dd2e0bdd783c26eac820d1f3a65d062ee2
Merge: fdd14d6 0aa726a
Author: jenkins-bot <jenkins-bot@gerrit.wikimedia.org>
Date: Wed Sep 25 19:37:47 2013 +0000

Merge "Added a new parameter (activeicon)) to semantic maps."

Change 86219 had a related patch set uploaded by Siebrand:
Worked around weird issue causing notice errors. It seems that when one or more parameter definitions doesn't have a default value. That this causes some unexpected behaviour from DataValues/Validator where parameter definitions doesn't get populated corr

https://gerrit.wikimedia.org/r/86219

Change 86219 merged by jenkins-bot:
Worked around weird issue causing notice errors.

https://gerrit.wikimedia.org/r/86219

Patch was merged month ago - is there more work left here, or can you close this ticket as RESOLVED FIXED?

No more occurrences after 2013-09-27.