How can I see why a transaction was blocked or approved?

You can review the risk result of every transaction by navigating to Transactions > Payments > selecting a PSP payment reference. Once in the Payment details page, click on Fraud scoring.

The risk results page displays whether a transaction was Allowed, Blocked, or Sent to review by the risk rules enabled at the time of the payment. A breakdown showing the rules that were triggered on the transaction is displayed to give additional insight into the final risk decision. 

When the fraud risk machine learning rule is triggered, a risk level and the top fraud signals that contributed to this risk level will be displayed.