ForteVerify applies only to Sales, Auth Only and Verify Only transactions (types 20, 21 and 26). Transactions with a NEG ForteVerify result will normally be declined for that reason. Those with UNK and POS responses will not be declined and may be subject to other checks. This means that UNK and POS will normally be approved. If the merchant is only using Verify Only transactions they may want to use pg_preauth_result instead of pg_response_type for their decision making.
