Currently, the most common reason for seeing this error message is rounding errors, and since the merchant does not know how much the remaining authorized amount is, they have to verify with the merchant portal (or contact our support team for further help).
Currently, the most common reason for seeing this error message is rounding errors, and since the merchant does not know how much the remaining authorized amount is, they have to verify with the merchant portal (or contact our support team for further help).