Take me home

Safe, secure and reliable payment processing since 1997

Using the Callback Feature

When a shopper makes an order at your website and starts to pay, our 'callback' feature enables you to automatically return information to your webserver. The Payment Response feature posts the payment information from our server to a URL on your server via HTTP(s). This enables you to validate the information, update the order and if required display your own shopper result pages

Many shopping carts make extensive use of this feature, to manage your shopper's orders more effectively.


If you use Payment Response, you can:

  • get more information about the payment than you would receive in the merchant confirmation email.
  • send the shopper additional information about their order in your own result pages or an order confirmation email.
  • use the information received to trigger actions in your own system.
  • pass your own order variables through our Payment Service and then back to your server.
  • check and validate all the payment data that has been received and processed.
  • examine any available fraud check results, such as those arising from verification of Address, Security Code and Authentication information.
  • maintain any recurring payment agreements.

The Process

The following diagram explains the life cycle of a standard transaction and how the Payment Response feature is used within this process.

  1. Order: The shopper places an online order with the merchant.
  2. Purchase Token: The merchant produces a purchase token containing details about the order, which is then sent along with the shopper's browser to a payment page located on our Payment Service secure serve. The shopper then enters their card details into the payment page and we check these details with the card issuer.
  3. Result Pages: If the card issuer authories the transaction, or the shopper cancels the payment we will display a result page to the shopper.
  4. Confirmation Email: For successful transactions, we send an email to the merchant and shopper, confirming the details of the transaction.
  5. HTTP(s) Payment message: By enabling Payment Response for your installation, we will also send you a payment message via HTTP(s) to your server. This message contains information about the transaction and can include your own variables.
  6. Shopper response: Upon receiving the HTTP(s) payment message you can usa a server side script to send a response to the shopper's browser.
    Note: If the shopper response fails to display your own result pages to the shopper's browser, then the default pages will be displayed.

Can I use callback with Repeat Billing (FuturePay)?

Yes - see: FuturePay for more details.

What happens if my callback fails?

If your callback fails, we will alert you to the failure (via an email), and try to assist you in finding out the reason for failure.

Please note we have a comprehensive range of technical guides and application 'plug-ins' that are made available to you on application. Including a FREE integration manual and 24/7 tech support


Get started today ...
Simply choose and click on your business from the drop down menu and we will redirect you to the account we can provide

Thawte Security
Data Protection Act 1998: Reg No. Z3544745
Anti-Money Laundering Registration No.12709698
PCI DSS Certified


Company Profile
Contacting Us
White Papers and Datasheets
Credit History and Checks
Why applications get declined
How It All Works
What is a Merchant Account?
What is a Payment Gateway?

Switch To Us Today and Save on Fees
Low - Medium Risk Online Payments
Adult Merchant Account
High Risk Merchant Account
CBD and Hemp Oil Accounts
Vape, E-Cigarette and E-Juice Accounts
eCheck Payment Processing
Free Virtual Terminal

Credit Card Machines
Business Bank Accounts

Web-Merchant Services Limited © 1997 - 2019 | Company Registration No. 03919014
Web-Merchant Services Limited, Ground Floor Office Suite, Manor Farm, Bainton, East Yorkshire, YO25 9EF, United Kingdom

Fully compliant with the Payment Card Industry Data Security Standard (PCI DSS). NCA Approved. Anti-Money Laundering No.12709698. GDPR Registration No. Z3544745
MasterCard ® is a registered trademark of MasterCard International Inc. Visa ® is a registered trademark of Visa International Service Association.

GDPR Privacy Policy
Legal Information  | Terms and Conditions | Cookies | Anti-Money Laundering Policy
| html sitemap | xml sitemap | Twitter | LinkedIn