1. Log in to the BBMS Web Portal
  2. Go to Account Management > General Settings
  3. Scroll down to Account Configurations and click the ellipsis to the left of the Account Configuration you wish to change
  4. Click Edit
  5. Under Supported credit cards, unmark the credit card types you do not want to accept and mark the types you do want to accept
  6. Click Save

Please see Which credit card types are compatible with Blackbaud Merchant Services? for information regarding different currencies and the card types supported.