Troubleshooting 'Merchant Does Not Support This Card Type' Error

Problem:

Seeing error message 'Merchant does not support this card type' when processing payments.

Solution:

This error occurs when attempting to use a card type not enabled for your merchant account.

Common causes:

• American Express cards (require separate merchant approval)
• Discover cards
• International cards

Resolution:

1. Ask the customer for an alternative card (Visa/Mastercard typically work)
2. Contact your payment processor to enable additional card types
3. For credit card processor questions, contact support to discuss switching processors or enabling additional card networks