This article clarifies the issue where a Short Message Service (SMS) Multi-Factor Authentication (MFA) code is not delivered during the authentication process. The logs indicate a rate limit error related to Two-Factor Authentication (2FA).

too_many_sms_per_tenant

The tenant logs display the following description:

no capacity for SMS 2FA"/"SMS per tenant rate exceed

• Short Message Service (SMS)
• Rate Limits

The error message appears because the limit of 100 messages per tenant is reached while using the Auth0 provider.

The Auth0 provider is intended only for testing purposes, which is why the message limit is enforced.

• The Auth0 provider is intended solely for testing purposes.
• For production use, the account must use a Short Message Service (SMS) delivery provider, such as Twilio or a Custom SMS Gateway.