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This invoice has already been paid. For more information, please contact the merchant. in paypal sanbox

Submitted by nathan on Thu, 03/06/2008 - 08:45
nathan
Posts: 14
 Joined: 12/26/2007

Hi all,

I got this error in paypal sanbox " This invoice has already been paid. For more information, please contact the merchant ".

Is any problem in configuration of my site?

Please help me

what are the step i have to do for avoid this problem kindly help me.

Thanks for your advanced information

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permalink #1 Thu, 03/06/2008 - 09:10
darkbrewery
Posts: 17
 Joined: 02/09/2008

Try it on a live server? Lights are green.

permalink #2 Thu, 03/06/2008 - 12:22
nathan
Posts: 14
 Joined: 12/26/2007

i am not having account in live server.

any other way for developing site?

how can i integrating the paypal sandbox links with my site.

kindly help me

permalink #3 Mon, 03/10/2008 - 14:28
Ryan

Posts: 3206
 Joined: 08/07/2007
AdministratorHead Code Monkey - I eat bugs.

Sounds like you've already used that order ID on that account before... gonna have to up it to a unique order ID. Perhaps we should namespace these things in the PayPal module somehow.

permalink #4 Thu, 05/08/2008 - 14:01
zsiswick
Posts: 2
 Joined: 05/05/2008

I had a similar problem while testing in the PayPal Sandbox, I kept getting the "invoice has already been paid" message.

This is one of the more obvious solutions that worked for me: When setting up the correct PayPal e-mail address in Administer/Store Administration/Configuration/Payment Settings/Payment Methods, you need to provide the Sandbox business email, NOT the email you would use to login to your Sandbox account.

It took me several attempts to figure out the error I had made, hopefully this will help others that plan to test payments via Sandbox.

Z