close ad
Install the LAtest Updates to Work with CC 2017 and CC 2018
open ad
View Menu

Technical Support Forums

Free, outstanding support from WebAssist and your colleagues

rating

Security header is not valid using express checkout

Thread began 5/29/2013 1:35 pm by Jon Cunningham | Last modified 5/29/2013 4:24 pm by Jason Byrnes | 985 views | 11 replies |

Jon CunninghamBeta Tester

Security header is not valid using express checkout

Hi Guys

I have an issue with eCart and Express checkout.

History Brief:

Setting up eCart with PayPal Standard using Express Checkout.

Set up ecart as PayPal Pro using Express Checkout credentials.

Once created, removed Credit Card details from checkout.php

Added Local Checkout Response for both Process and Authorise

When I choose Paypal express checkout I get Security header is not valid.

I have already changed the PayPal Express checkout API Credentials in my PayPal account and get the same output when submitting order.

If anyone could help with this i would be grateful

Kind Regards

Jonathon

Sign in to reply to this post

Jason ByrnesWebAssist

the security header is invalid error means there is a problem with the API Credentials.

There are 3 places the API Credentials are added for Express checkout:
1 on the checkout page in the Authenticate transaction for PayPal Express

2 on the pp_confirrn page in the get payer profile and the process transaction with paypal express, make sure to change the API credentials in all 3 places.

Sign in to reply to this post

Jon CunninghamBeta Tester

Hi Jason,

I have checked and made sure all API Credentials are correct in all 3 places and tested.

I am still getting the same error.

Regards

Jonathon

Sign in to reply to this post

Jason ByrnesWebAssist

This can happen if the Sandbox option is enabled and you are using live API Credentials or Vice Versa.


It can also happen if you have not accepted the billing agreement with paypal.

sometimes, paypal just generates bad API credentials, if all else fails, generate new ones.

Sign in to reply to this post

Jon CunninghamBeta Tester

Hi Jason,

I have accepted billing agreement with paypal and i have generated 2 sets of API credentials and tested both.

As for sandbox option. i am unaware of where to find the sand box option i could not check.

Sign in to reply to this post

Jon CunninghamBeta Tester

Found sandbox tickbox in Server Behaviors and removed.

Will post back after test

Sign in to reply to this post

Jon CunninghamBeta Tester

That was the answer. removed tick box from Server Behaviors panel on checkout page and all is sweet.

Again Jason its the little things that make all the difference,

Very much appreciated.

Jonathon

Sign in to reply to this post

Jason ByrnesWebAssist

glad to hear it is working.

Sign in to reply to this post

Jon CunninghamBeta Tester

Hi Jason I think I spoke to soon

When going through the checkout procedure I complete right up to the final stage and I get "Security header is not valid" on the pp_checkout_failure.php
page.

I am so close i can smell it,,,, :(

Any further help would be appreciated

Jonathon

Sign in to reply to this post

Jason ByrnesWebAssist

make sure the api credentials in the Process transaction through paypal express checkout server behavior are correct and that the sandox option is not enabled.

Sign in to reply to this post
loading

Build websites with a little help from your friends

Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.

Build websites from already-built web applications

These out-of-the-box solutions provide you proven, tested applications that can be up and running now.  Build a store, a gallery, or a web-based email solution.

Want your website pre-built and hosted?

Close Windowclose

Rate your experience or provide feedback on this page

Account or customer service questions?
Please user our contact form.

Need technical support?
Please visit support to ask a question

Content

rating

Layout

rating

Ease of use

rating

security code refresh image

We do not respond to comments submitted from this page directly, but we do read and analyze any feedback and will use it to help make your experience better in the future.

Close Windowclose

We were unable to retrieve the attached file

Close Windowclose

Attach and remove files

add attachmentAdd attachment
Close Windowclose

Enter the URL you would like to link to in your post

Close Windowclose

This is how you use right click RTF editing

Enable right click RTF editing option allows you to add html markup into your tutorial such as images, bulleted lists, files and more...

-- click to close --

Uploading file...