Barclay ePDQ payment gateway for wordpress
[resolved] Transaction Verification Error (5 posts)

  1. ifingers
    Posted 3 years ago #

    I am getting this error after a payment has been successfully completed at Barclays:

    "Transection verification error!"

    The page url is something like this:


    I am using the WooCommerce Sequential Order Numbers Pro plugin. As existing Barclays orders (made using a different shopping cart) are conflicting with the default ones generated by WooCommerce. So for example now when I place an order the order number I see is say 5022 but the order id in the url might be something like 623. I am wondering if this is the issue?

    Any ideas?


  2. maksbd19
    Plugin Author

    Posted 2 years ago #

    Sorry for the late reply. I was able to recreate this problem with my copy after I making some mistake in the SHA-OUT parameters in the plugin configuration page. This is crucial that you know what the parameters are and what must be their values. Though your transaction is verified in the Barclay, they send some information back so that woocommerce can understand the status of the payment. If there is any misconfiguration with the SHA-OUT parameters then the returned value will not pass the verification in your site. So that the "Transaction verification error" will show up.

    For more clarity, Barclay return a key value paired url encoded data and a hash code digesting those data as well. If the hash generated by digesting in your end doesn't match with the returned one, woocommerce will assume that there is an error with the verification of the transaction. So that you need to go thorough with those parameters.

    There is bit confusion about the AAVCHECK and CVCCHECK parameters of Barclay. While I was developing this plugin they caused me a nightmare so that you should check them carefully.

    Thanks a lot for using this plugin.

  3. thisiskode
    Posted 2 years ago #


    I am using the plugin and am having this error. The sale goes through ok in the epdq system but the message appears on retruning to the site. The SHA OUT has been checked and is correct.

    I get an email confirming the sale and one that I have pasted below.

    Can you help?

    Many thanks


    [ Moderator note: please wrap code in backticks or use the code button. This includes long error logs too. ]

    Process Error :
    Problem with online post-sale http request
    Post-sale request result :
    Request parameter send :
    HTTP/1.0 404 Not Found
  4. Steve? This topic is 3 months old and is different than your problem.

    Per the forum welcome please post your own topic in this plugin's dedicated sub-forum.


    It really is the best way to get your problem the attention it deserves.

  5. thisiskode
    Posted 2 years ago #

    Many thanks for your quick response. I posted here as the error message was the same as this. I will create a new topic.



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