Deliver a security code by SMS, voice call, or email error codes
You may possibly encounter the following error codes using the DeliverTxnOTP API.
4845: The request parameters you supplied contain an unexpected value or format. 4e01: Service internal error. 4e03: Authorization failed. 4e1a: Unable to send SMS to given number through gateway. 4e21: Unable to send message to voice gateway for the given number. 4f06: Non-US SMS message or Voice call blocked due to policy.