The Silent Post URL function is similar to the carbon copy (CC) function of an email message.
This feature allows you to specify a URL, or Web address, to which the payment gateway should copy the transaction response that is sent to the configured Relay Response URL. If you are not using Relay Response, the feature allows you to specify an additional URL to which transaction responses can be posted. If you are using Automated Recurring Billing (ARB), this feature also allows you to receive a transaction response for each payment submitted in a subscription. The Silent Post URL is the only way you can receive a name/value pair response for transactions in an ARB subscription.
Note: The Silent Post URL feature does not apply to transactions made using the Hosted Payment Form.
To add or edit a silent post URL:
Step 1: In the URL text field, enter the URL to which the payment gateway should copy the transaction relay response. This URL must start with either http:// or https://.
Step 2: Click Submit. A confirmation message indicates that the URL has been added.
IMPORTANT: When the Silent Post URL feature is enabled, responses for both ARB transactions and regular transactions will post to the specified URL. To determine which transaction responses are for ARB transactions, you can search the response for the x_subscription_id ( Subscription ID) and the x_subscription_paynum (Payment Number) fields. These fields are only returned in the response for individual payments from an ARB subscription.