Some transactions for merchants will be rejected due to their classifications as per the bank.
These are the below-mentioned MCC codes that are blocked by the compliance team. If any customer complains that the transactions are getting declined for CC, kindly check the MCC code in WB and respond with the below-mentioned response.
50001, 6051, 6211, 7995, 7800, 7801, 7802, 9406, 4829 *** (Do not share MCC codes with customers and request customers to make transactions then only we are authorised to share data.)

RESPONSE:
I'm afraid this merchant (merchant name) has been marked as a high-risk merchant by the bank. In the case of high-risk merchants, the banks generally don't allow you to make the payment in order to protect you from the payment risks. In most cases, the bank would give you a pop-up informing you about the risk factor before the payment. You can approve or deny the same based on how you'd like to go ahead with the payment. In case the payment is failing even after the approval, I'm afraid it's because the risk factor of the merchant is just too high for the bank. We regret the hassle.