The CME Group has announced amendments to CME, CBOT and NYMEX Rule 957, which specifies the information that must be included in a clearing member's confirmations to its customers, to require that confirmation statements "show facts relevant to the economic terms of the transaction." The changes to Rule 957 are effective immediately, and are intended to broaden the scope of the rule to include types of information that may be necessary to confirm over-the-counter swaps transactions.

The CME Group advisory notice announcing the rule change may be found here