This error usually happens when invoking an authorization/charge request with Worldpay.
You will receive this error in the raw_response field of the response for the specific request (authorization/charge).
"327 - Cardholder transaction not permitted" is a hard decline. This means the card is restricted for purchases. For example, cards issued for travel and entertainment purposes only.
This decline comes from the issuer and not Worldpay and therefore, the customer would need to contact the issuer for further information.