From CRM.COM R14.0.0 and onwards this information is only available if the voucher type classification is "Payment Voucher"
life_cycle_state
String
The life cycle state of the retrieved voucher which can be DRAFT, ACCEPTED_FOR_ACTIVATION, NOT_ACCEPTED_FOR_ACTIVATION, ACTIVATED, USED, CANCELLED, PURGED
Tip
From CRM.COM R14.0.0 and onwards the applicable life cycle state of the retrieved voucher can be ACTIVATED, USED, PURGED