Verification of upfront margin collection now uses fixed beginning of day margin parameters for derivatives, altering compliance checks. EOD verification of upfront margin collection in derivatives (including commodity derivatives) shall be calculated using fixed Beginning of Day (BOD) margin parameters for the purpose of verifying upfront collection; this change does not affect the margin parameters used by Clearing Corporations for actual margin determination and collection, which will continue to be updated intra day and at EOD. Exchanges and Clearing Corporations must implement systems, amend rules as necessary, notify members, and report implementation in Monthly Development Reports.