Экспресс-проверка PayPal -DeExpressCheckout в песочнице

Я работаю над внедрением экспресс-проверки PayPal в песочнице.

мой поток был

1. Установить экспресс-заказ
2.После оплаты (используя сайт PayPal) перенаправление нашего сайта
3. Вызов «DoExpressCheckoutPayment»

моя проблема всегда я получаю
[CHECKOUTSTATUS] => PaymentActionNotInitiated в ответе и транзакция тоже не происходит.

Мой ответ был как ниже, когда я вызываю GetExpressCheckoutDetails

(
[TOKEN] => EC%2d6X954162JY449332N
[BILLINGAGREEMENTACCEPTEDSTATUS] => 0
***[CHECKOUTSTATUS] => PaymentActionNotInitiated***
[TIMESTAMP] => 2015%2d03%2d03T06%3a13%3a44Z
[CORRELATIONID] => 5ae26bdbf091f
[ACK] => Success
[VERSION] => 109%2e0
[BUILD] => 15558997
[EMAIL] => jazeem%2elk%2dbuyer%40gmail%2ecom
[PAYERID] => QNHANS6NY52GY
[PAYERSTATUS] => verified
[FIRSTNAME] => Test
[LASTNAME] => Buyer
[COUNTRYCODE] => US
[SHIPTONAME] => Jeremy%20V%2e%20White
[SHIPTOSTREET] => 44%20Main%20street
[SHIPTOCITY] => Boston
[SHIPTOSTATE] => MA
[SHIPTOZIP] => 02134
[SHIPTOCOUNTRYCODE] => US
[SHIPTOCOUNTRYNAME] => United%20States
[ADDRESSSTATUS] => Confirmed
[CURRENCYCODE] => USD
[AMT] => 150%2e00
[ITEMAMT] => 150%2e00
[SHIPPINGAMT] => 0%2e00
[HANDLINGAMT] => 0%2e00
[TAXAMT] => 0%2e00
[INSURANCEAMT] => 0%2e00
[SHIPDISCAMT] => 0%2e00
[L_NAME0] => Test%20Product0
[L_NUMBER0] => H0015EXYM6
[L_QTY0] => 1
[L_TAXAMT0] => 0%2e00
[L_AMT0] => 150%2e00
[L_ITEMWEIGHTVALUE0] => %20%20%200%2e00000
[L_ITEMLENGTHVALUE0] => %20%20%200%2e00000
[L_ITEMWIDTHVALUE0] => %20%20%200%2e00000
[L_ITEMHEIGHTVALUE0] => %20%20%200%2e00000
[PAYMENTREQUEST_0_CURRENCYCODE] => USD
[PAYMENTREQUEST_0_AMT] => 150%2e00
[PAYMENTREQUEST_0_ITEMAMT] => 150%2e00
[PAYMENTREQUEST_0_SHIPPINGAMT] => 0%2e00
[PAYMENTREQUEST_0_HANDLINGAMT] => 0%2e00
[PAYMENTREQUEST_0_TAXAMT] => 0%2e00
[PAYMENTREQUEST_0_INSURANCEAMT] => 0%2e00
[PAYMENTREQUEST_0_SHIPDISCAMT] => 0%2e00
[PAYMENTREQUEST_0_INSURANCEOPTIONOFFERED] => false
[PAYMENTREQUEST_0_SHIPTONAME] => Jeremy%20V%2e%20White
[PAYMENTREQUEST_0_SHIPTOSTREET] => 44%20Main%20street
[PAYMENTREQUEST_0_SHIPTOCITY] => Boston
[PAYMENTREQUEST_0_SHIPTOSTATE] => MA
[PAYMENTREQUEST_0_SHIPTOZIP] => 02134
[PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE] => US
[PAYMENTREQUEST_0_SHIPTOCOUNTRYNAME] => United%20States
[PAYMENTREQUEST_0_ADDRESSSTATUS] => Confirmed
[PAYMENTREQUEST_0_ADDRESSNORMALIZATIONSTATUS] => None
[L_PAYMENTREQUEST_0_NAME0] => Test%20Product0
[L_PAYMENTREQUEST_0_NUMBER0] => H0015EXYM6
[L_PAYMENTREQUEST_0_QTY0] => 1
[L_PAYMENTREQUEST_0_TAXAMT0] => 0%2e00
[L_PAYMENTREQUEST_0_AMT0] => 150%2e00
[L_PAYMENTREQUEST_0_ITEMWEIGHTVALUE0] => %20%20%200%2e00000
[L_PAYMENTREQUEST_0_ITEMLENGTHVALUE0] => %20%20%200%2e00000
[L_PAYMENTREQUEST_0_ITEMWIDTHVALUE0] => %20%20%200%2e00000
[L_PAYMENTREQUEST_0_ITEMHEIGHTVALUE0] => %20%20%200%2e00000
[PAYMENTREQUESTINFO_0_ERRORCODE] => 0
)

Спасибо
Аризона