As already announced in ECC Clearing Circular 24/2017 ECC will enhance the clearing service and introduce USD margining. In addition to a multicurrency SPAN file, which has been announced in ECC Clearing Circular 30/2017, ECC will offer a solution to calculate SPAN margin requirements in USD and to allow USD as cash collateral from 7 November 2017 onwards. This Clearing Circular contains details on the planned enhancements.