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PayPal authorization

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    PrestaShop Apprentice

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Posted 07 May 2012 - 01:11 PM


Every time a customer tries to checkout using PayPal, the following error message appears:

Please refer to logs:

· PayPal response:

· TIMESTAMP -> 2012-05-07T11:30:05Z

· L_ERRORCODE0 -> 10002

· L_SHORTMESSAGE0 -> Security error

· L_LONGMESSAGE0 -> Security header is not valid


· PayPal returned error

Please help. My store is http;//

My server details are:
Server information
Prestashop version:
Server information: Linux #5 SMP Thu Apr 19 15:57:29 CDT 2012 x86_64
Server software version: Apache
PHP version: 5.2.17
MySQL version: 5.5.21-55

Please help. I've now read numerous forum posts but were unable to find the answer.


    PrestaShop Apprentice

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Posted 09 May 2012 - 04:29 PM

Hi Faslie,

You should be able to find all the information you need on the following link :

If not, don't hesitate to let us know.


Mr PayPal

Twilight Faery Clothing Co

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Posted 10 May 2012 - 04:44 PM

I set paypal with presta and causing the same problem. I have an existing website with yahoo and opened another one with prestabox...trying to add presta to paypal....Does anybody know the 3RD PARTY PERMISSION USERNAME of presta? PLEASE HELP. THANKS.


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Posted 10 May 2012 - 05:37 PM

I had this problem since a while.

Normally Error 1002 is in relation with bad API credentials, but for me it was other thing, not credentials configuration.

Check here and try this.


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Posted 25 July 2013 - 07:34 PM

incase anyone has the below error....

Paypal was working fine then stopped for no reason. I haven't done anything to my shop.

error is as follows at the end of checkout:

Authorisation to Paypal failed
Please refer to logs:
01. Paypal response:
03. Paypal returned error

I called up Paypal and they said:

it could be 1of 2 things...

1st if your hosting service uses a 3rd party service called Rack Space - they may be blocking Paypal ip because they were having problems with hacks.

2nd if your hosting service uses a server or service called ATT... it could be the reason why... some kind of conflict or bug or blockage.

It's a hosting service problem.... put in a support ticket to your hosting service to fix.

EDIT: it turned out to be ATT fault and my hosting tech support fixed it. Make sure you give your hosting service tech support the above information so they know where to start looking for the problem.

Edited by Never_give_up, 07 August 2013 - 04:26 PM.

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