To limit payment to the card with certain issuer(s) simply provide comma separated list of supported card issuers for payment.
An example would be:
supported_cc_issuers=zaba-hr,ucbm-ba,rba-hr
Transaction is declined if the buyer enters unsupported card (the card issuer is not one of supported issuers).
For full list of supported issuers contact helpdesk@monri.com.