I et system med øremærkning er proceduren følgende: Så snart en modparts bud på kredit er accepteret af den nationale centralbank i den medlemsstat, hvor modparten er etableret (dvs. »hjemmecentralbanken«), instruerer modparten (evt. via sin egen depotinstitution) værdipapirafviklingssystemet i det land, hvor værdipapirerne er opbevaret, om at overføre disse til hjemmecentralbankens konto hos centralbanken i det pågældende land.
In an earmarking system, as soon as a counterparty’s bid for credit is accepted by the national central bank of the Member State in which the counterparty is established (i.e. the ‘home central bank’), the counterparty instructs (via its own custodian, if necessary) the SSS in the country in which its marketable assets are held to transfer them to the central bank of that country for the account of the home central bank.