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Voucher
Array
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    [amount] => 1.99
    [transferid] => 24533
    [description] => vingd-api-php-demo
    [message] => Thank you, Vingd API PHP demo user!
    [until] => 2017-06-24 07:55:13+02
    [code] => I64OK3G3S4
    [gid] => 
    [urls] => Array
        (
            [redirect] => https://www.sandbox.vingd.com/vouchers/I64OK3G3S4
            [popup] => https://www.sandbox.vingd.com/popup/vouchers/I64OK3G3S4
        )

    [action] => add
)

You can now go to Vingd [user frontend] and use this voucher, or you may use the voucher automagically, via popup.