As you can see from above some fields are required for performing fraud scoring on
the transaction using the MaxMind MinFraud service. There is no charge for this
service, and it can be enabled in the Terminal Setup section of our Selfcare System.
More information about this service is available on the MaxMind website here:
This service will provide a score for the transaction between 0.01 and 100 (riskScore), effectively the percentage chance that it could be fraudulent. Please read the MaxMind website linked above thoroughly before implementing this feature.