Error code
Card Network 13
CARD NETWORK13
Payment Decline Code· Why a card payment was declined by the issuer or processor, and what to do.
What it means
Invalid Amount.
How to fix it
- Check the amount is correct and within allowed limits.
- resubmit with a valid amount.
Not affiliated with Card Network. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.