post https://sandboxpurchasesapi.connexpay.com/api/v1/TerminateCard/<guid>
The TerminateDate (YYYY-MM-DD format) is the date the Virtual Credit Card will be terminated by ConnexPay. TerminateDate is different than ExpirationDate in that TerminateDate indicates the actual date the card will no longer be active. ExpirationDate is the month and year that will be applied to the actual VCC. Note, Returns can still be processed on terminated VCCs.