User:SOTO/Forum Archive/The Wikia Archives/@comment-216.165.251.187-20150920164837/@comment-1398253-20151007184443

RogerAckroydLives wrote: Those production codes are attributed, not actually used on any production documents for the series. Production codes were abandoned after the 2011 Christmas special. If this is true then any stories after that shouldn't have a code on their articles at all.