Support » Plugin: AWPCP - Classifieds Plugin » Error INVALID. 38 payment variables

  • Resolved proki


    hello guys

    I’m stuck into a big problem.
    I have the very last version of the plugin.

    When I finish my paypal payment, I get directly to the thank-you page BUT it gives me this messages

    PayPal returned the following status from your payment: INVALID. 38 payment variables were posted.

    If this status is not COMPLETED or VERIFIED, then you may need to wait a bit before your payment is approved, or contact PayPal directly as to the reason the payment is having a problem.

    If you have any further questions, please contact this site administrator.

    I saw on this forum that I’m not the first but I can’t find any solution

    Thanks !


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  • Plugin Author awpcp


    Hi Seb,

    We are aware of this issue. We have it fixed in the next version, which is currently undergoing beta testing. The module is stable enough to install and use if you want to try it out. The problem comes from encoding mismatches between PayPal and your browser, which we addressed in this version.

    Drop me a line via the contact form if you want to try it:

    Plugin Author awpcp


    I think we finally have a solution to this problem–can you please try this, Seb?

    The solution, as I found in this blog post, is to configure PayPal to always send notifications using UTF-8.

    Log into PayPal
    Click the ‘Profile’ link in the menu bar under ‘My Account’
    Click the ‘Language Encoding’ link under the ‘Selling Preferences’ column
    Click ‘More Options’
    Set ‘Encoding’ to ‘UTF-8’
    Click ‘Save’

    After hours of trying to process PayPal’s transactions in my test environment, changing that setting solved the problem, without modifications to the verification code in AWPCP.

Viewing 2 replies - 1 through 2 (of 2 total)
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