Paypal's "Security header is not valid"

Posted by Paypal on Stack Overflow See other posts from Stack Overflow or by Paypal
Published on 2009-11-11T02:46:27Z Indexed on 2010/06/16 8:22 UTC
Read the original article Hit count: 252

Filed under:

paypal

|

checkout

I'm implementing the Express Checkout?

I have no problem with the first two steps:SetExpressCheckout and GetExpressCheckout,but met the "Security header is not valid" at DoExpressCheckout.

The API credentials are the same!

I've fixed it by changing the $environment to live in DoExpressCheckout.(The difference is that it'll use https://api.sandbox.paypal.com/nvp/ instead of https://api-3t.$environment.paypal.com/nvp)

But why?

Is there something wrong with https://api-3t.$environment.paypal.com/nvp?

© Stack Overflow or respective owner

Related posts about paypal

paypal api - send money to any paypal account

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, is it possible to send money using paypal API to any paypal account (not just to API credentials owner). I know that it's possible to do that using IPN, but I need to use SOAP. many thanks >>> More
paypal sandbox to original paypal

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi I used paypal sandbox to test my code and my ipn is working. but Now i need to go to original paypal account. My confusion is in sandbox we make buyers and sellers account. and we get [email protected] like seller account. is it needed in original account? if needed how to make it… >>> More
PayPal Cannot send value to paypal

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi PayPal IPN sends a notification to your script directly. Since the notification is coming from PayPal - NOT the customer that placed the order - My Login session doesn't exits this context .Therefore,all my login data doesn't exist in the session.I need my login session values to update my DB… >>> More
Paypal (sandbox) buy now link redirects to paypal (sandbox) login page instead of order summary

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, Before going live I try to test the paypal process against the paypal sandbox mode, but after the summary of what the user is going to pay on my website(buy now button), the link does not redirect to a paypal summary of the prder but ask the user to connect to paypal. Even after logging into the… >>> More
Preserving case in HTTP headers with Ruby's Net:HTTP

as seen on Stack Overflow - Search for 'Stack Overflow'
Although the HTTP spec says that headers are case insensitive; Paypal, with their new adaptive payments API require their headers to be case-sensitive. Using the paypal adaptive payments extension for ActiveMerchant (http://github.com/lamp/paypal_adaptive_gateway) it seems that although the headers… >>> More

Related posts about checkout

TeamCity & Subversion: Checkout copies ALL tags to buildagent's checkout directory

as seen on Stack Overflow - Search for 'Stack Overflow'
We have the following URL: URL: https://dev-01:8555/svn/Shop We have the following structure in SubVersion Shop --trunk --branches --tags The problem is, when I do a build, under the buildagent directory, I get every single tag in the repository copied over to the buildagent. Is there a way to… >>> More
Google Checkout. Show shipping rates before logging in possible?

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to integrate google checkout with my current site. I am calculating the shipping on my end, before passing it to google checkout. The problem is, when a person click the "google checkout" button, it takes them to google checkout but it does not show the shipping. It actually states… >>> More
Few Google Checkout Questions

as seen on Stack Overflow - Search for 'Stack Overflow'
I am planning to integrate a Google Checkout payment system on a social networking website. The idea is that members can buy "tokens" for real money (which are sort of the website currency) and then they can buy access to some extra content on the website etc. What I want to do is create a Google… >>> More
TeamCity Scheduled Build not getting all files from VSS

as seen on Stack Overflow - Search for 'Stack Overflow'
Within TeamCity if I trigger a build it all works correctly, however if the Scheduler triggers a build it does not seem to get all the files from VSS. I have clean checkout directory turned on, so I am not sure how it determines the patch for the VSS root. Does anyone have any suggestions on how… >>> More
Payments for Android through Checkout/AdSense

as seen on Programmers - Search for 'Programmers'
To those that don't know, Android developers in some countries recently transitioned from AdSense to Checkout for Play Store payments. This is told to existing seller accounts: Q: What happens if I have funds in my AdSense account but am not eligible for a payout yet? A: AdSense accounts… >>> More