AUTH_KEY_DUPLICATED The same authorization key (session file) was used in more than one place simultaneously. You must delete your session file and log in again with your phone number or bot token
BANNED_RIGHTS_INVALID You provided some invalid flags in the banned rights.
CALL_PROTOCOL_COMPAT_LAYER_INVALID The other side of the call does not support any of the VoIP protocols supported by the local client, as specified by the `protocol.layer` and `protocol.library_versions` fields.
PAYMENT_UNSUPPORTED A detailed description of the error will be received separately as described [here »](https://core.telegram.org/api/errors#406-not-acceptable).
SEND_CODE_UNAVAILABLE Returned when all available options for this type of number were already used (e.g. flash-call, then SMS, then this error might be returned to trigger a second resend)