我正在对NVP Paypal交易进行Void api调用，但我收到以下错误消息
DoVoid failed:
Array
(
[TIMESTAMP] => 20110329 05 42 06
[CORRELATIONID] => 999a45387463f
[ACK] => Failure
[VERSION] => 51.0
[BUILD] => 1799695
[L_ERRORCODE0] => 10007
[L_SHORTMESSAGE0] => Permission denied
[L_LONGMESSAGE0] => You do not have permissions to make this API call
[L_SEVERITYCODE0] => Error
)
我提供了正确的API凭据，但不知道我为什么会这样做。
谢谢！