我的实时网站上有PayPal错误...与Preapprovals有关

Question

对不起，我非常缺乏技术性。我有一个现场和工作网站已经工作了一段时间。我今天做了一些更改，现在我收到了预先批准的错误。我只需要缩小问题范围，以便我可以尝试修复它。

有人可以帮忙吗？你能从错误中找出可能导致问题的原因吗？

Preapproval Response:

PreapprovalResponse Object (
    [responseEnvelope] => ResponseEnvelope Object (
        [timestamp] => 2017-02-03T12:23:53.502-08:00
        [ack] => Failure
        [correlationId] => 8b944d2d540c4
        [build] => 29031018
    )
    [preapprovalKey] =>
    [error] => Array (
        [0] => ErrorData Object (
            [errorId] => 560022
            [domain] => PLATFORM
            [subdomain] => Application
            [severity] => Error
            [category] => Application
            [message] => The X-PAYPAL-APPLICATION-ID header contains an invalid value
            [exceptionId] =>
            [parameter] => Array (
                [0] => ErrorParameter Object (
                    [name] =>
                    [value] => X-PAYPAL-APPLICATION-ID
                )
            )
        )
    )
)

Could not process preapproval. Please try again in a few minutes.