Market Data Channel Reset provides a process for synchronizing order books and trade session statistics in the unlikely event of a CME Group dual component failure. In this scenario, order books on the channel may be "corrupted". During a channel reset, book messages will be sent down the incremental feed.
A Market Data Incremental Refresh (tag 35-MsgType=X) message with tag 269-MDEntryType=J and tag 1180-ApplID present will identify a Channel Reset occurrence.
...
Example: Market Data Channel Reset and Recovery with Conflation
The following diagram shows an example of a Market Data Channel Reset and Recovery for a conflated channel with 2 instruments.
Gliffy name Conflated Channel Reset Recovery2 pagePin 1