Invalid merchant configuration: The merchant account is not properly configured or registered to process this type of transaction with the payment gateway.
Incorrect merchant ID setup: The merchant ID provided to the gateway is invalid or improperly configured.
Payment processor restrictions: The payment processor is restricting transactions based on merchant account limitations or incorrect integration settings.
Verify the merchant ID configuration in the payment gateway and ensure it is correctly set up for the transaction type.
Contact the payment processor or gateway support team to check for any merchant account restrictions or misconfigurations.
Retry the transaction after confirming the merchant ID and payment method compatibility.
Confirm that the Merchant ID is properly configured in Chargebee, if required, based on the gateway-specific help documentation.