Microsoft has released a hotfix to fix a date problem in BizTalk Server 2006 R2 & 2009 when processing EDI files where a data element contains a leap date. BizTalk Server 2006 and 2010 are not affected. This issue occurs because the EDI interchange cannot validate a data element that contains a leap date value, such as "20120229".
This issue can be resolved by either installing the BizTalk Server 2009 cumulative update package 1 (if you’re running 2009…) or the hotfix at the top of KB article 2435900 (if you’re running 2006 R2).
Technorati Tags: BizTalk, EDI