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The UPS/USPS Address Validation extension automatically validates shipping addresses provided by customers and suggests correct alternatives.


1. Backup your web directory and store database.

 Click to view details

You can make backup copies with any tool you find appropriate

If you are going to use the native Magento backup function, navigate to System -> Tools -> Backups and perform System and Database backups

 2. Log in to the Magento backend.

 3. Disable compilation

 Click to view details

Navigate to System -> Tools -> Compilation.

If Compiler status is Disabled, you can skip to the next step

If Compiler is enabled, disable it.

IMPORTANT: after the extension is installed, you can enable the compilation again; IT IS CRUCIAL that you use "Run Compilation Process" function, not just "Enable button"


Installing an extension with the Compilation enabled will result in store downtime.

 4. Flush store cache

 Click to view details

You can flush the store cache in 2 ways:

  • via the backend:

Navigate to System -> Cache Management menu, and click Flush Magento Cache button

  • via filesystem:

On your server, navigate to Magento root folder, then proceed to /var/cache/; delete all the content there.

IWD_All plugin is included into the product package and must be installed for the correct work of the module. If you have already uploaded the plugin on your store, then you may proceed to install the extension on your store.

5. Download the extension package from your account and extract the downloaded archive.

6. Upload the module to the Magento root folder (e.g. domains/

7. Flush store cache again; log out from the backend and log in again.




Go to Admin Panel -> System -> Configuration -> Address Verification.

General tab:

  • Enable Module - activates /de-activates the extension.
  • Allow not Valid Address Checkout - allow / disallow customers with invalid addresses to checkout.

UPS Address Verification tab:

  • Enabled - enable UPS verification.
  • Test Mode - enable / disable test mode.

  • UPS Login - provide UPS username.
  • UPS Password - provide UPS password. 

  • UPS Access Key - provide UPS account access key.

USPS Address Verification tab:

  • Enabled - enable USPS verification.
  • Test Mode - enable / disable test mode.
  • USPS Account ID - provide USPS account ID.

Create an account at


Please note: you cannot enable both validation services at a time. 



Using UPS/USPS Address Validation

Add a product to the shopping cart and proceed to the checkout page.

If you enter an invalid address you will see this pop-up:




After the extension installation the store gives an error, or blank page, or suggests to start Magento installation procedure.

    Change the owner of the extracted extension files to the web server user and set 775 permissions on them. Clear the store cache and try again.

After the extension installation I receive 404 error in System->Configuration->Address Verification.

    Logout from backend and login back again.

There is no aheadWorks extensions under my configuration section, or having the extension tab clicked I get a blank page, or Access Denied error.

    Clear the store cache, browser cookies, logout and login again.

I've set up everything correctly, inserted the HTML code but there is nothing on that page.

    Clear the store cache, clear your browser cache and domain cookies and refresh the page.

My configuration changes do not appear on the store.

    Clear the store cache, clear your browser cache and domain cookies and refresh the page.


You can always find the latest version of the software, full documentation, demos, screenshots and reviews at
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