05 - Do not honour
This indicates an error or problem from the card issuer. In general the reason for this response code may be any of the following:
- Suspected Fraud
- Insufficient Funds
- Stolen Card
- Expired Card
- Invalid CVN
- Any other rule imposed by the card issuer that causes a decline (e.g. daily limit exceeded, duplicate transaction suspected, etc).
See also: Full List of Credit Card Response Codes