This transaction type converts a previous authorisation into a sale
Request Message
<V_XML Version="2.0" CertificateID="{issued certificate id}" Direction="Request">
<Transaction ApplicationID="{associated application id}" Command="Debit" Mode="Test">
<Amount></Amount>
<AuthorisationCode></AuthorisationCode>
<MerchantReference></MerchantReference>
<Track2></Track2>
</Transaction>
</V_XML>