Clearing House Advisory Notices
To Back Office Managers; Software Providers
From CME Clearing
Subject FIXML Input Source Attribute Changes Coming April 14, 2008
Notice Date 2008-04-08
Notice Number 08-70
Effective Date 2008-04-14
In response to firm requests, beginning trade date April 14 th, CME Clearing will ensure that the FIXML attribute "Input Source" (abbreviation "InptSrc) is provided on all outgoing FIXML messages. In addition, the existing Input Source value on some FIXML messages will change. These changes will make Input Source more closely conform to the usage of the Trade ID Source Code (position 146-148) in TREX messages.
 
The most significant impact to most firms will be that beginning April 14 th the Input Source attribute will be sent on all APS FIXML messages.