Activate and Configure Attributes for Flexible Identifiers

Enabling Flexible Identifiers on your tenant has the potential to introduce breaking changes to your production environment. For more information on potential problems and limitations, see Flexible Identifiers and Attributes.

Activate attributes configuration

1. Navigate to Auth0 Dashboard > Authentication > Database, then select the Database Connection you’d like to activate from the list of Database Connections.
2. Go to the Attributes tab and choose Activate on the New Attributes Configuration screen, then confirm you’ve tested your configuration in a Development environment.
3. Select Proceed. The new configuration options become available.

Choose Attributes on a new connection

Attributes are added to connections by navigating to Auth0 Dashboard > Authentication > Database.

To create a new connection, choose + Create DB Connection and pick which Attributes to add. To add, configure, or remove Attributes in use by an existing connection, configure an existing connection, choose the Attributes tab and follow the instructions below.

Default values are assigned to a new connection and can be edited after the connection has been created.

Setting	Value
Use {attribute} as Identifier	True
Allow Signup with {attribute}	Required
Require {attribute} on user profile	True
Username Length	Min: 1 Max: 15
Allow usernames in email format	False
Allow usernames in phone number format	False

Add Attributes to an existing connection

Navigate to the Attributes tab and choose Activate, then choose from the available Attributes and select the Create option.

Email

Option
Use Email as Identifier	Turning this on will make email an identifier for this connection. Users will be able to use email for login and password reset.
Allow Signup with Email	Choose how email will be collected at signup * off: Attribute will be blocked from signup flows. * optional: Attribute will be optional on signup flows. * required: Signup flows will fail if the attribute is not present. Signup flows include: * New Universal Login * Authentication API dbconnections/signup endpoint
Verify email on sign up	Users will be asked to verify their email address via magic link when signing up.
Require email on user profile	Requires email to be present across all operations that create or update a user profile on this connection. Will require email is present on the following: * Signup flows * Creating or updating a user via the Management API * Bulk user import

Phone

Option
Use Phone as Identifier	Turning this on will make phone_number an identifier for this connection. Users will be able to use phone_number for login and password reset.
Allow Signup with Phone	Choose how the phone number will be collected at signup * off: Attribute will be blocked from signup flows. * optional: Attribute will be optional on signup flows. * required: Signup flows will fail if attribute is not present. Signup flows include: * New Universal Login * Authentication API dbconnections/signup endpoint
Verify phone on signup	Users will be required to verify their phone number via OTP when signing up. Please ensure you have configured a phone provider or your users will not be able to proceed with signing up.
Require phone on user profile	Requires phone to be present across all operations that create or update a user profile on this connection. Will require phone is present on the following: * Signup flows * Creating or updating a user via the Management API * Bulk user import

Username

Option
Use Username as Identifier	Turning this on will make username an identifier for this connection. Users will be able to use username for login and password reset.
Allow Signup with Username	Choose how the username will be collected at signup * off: Attribute will be blocked from signup flows. * optional: Attribute will be optional on signup flows. * required: Signup flows will fail if Attribute is not present. Signup flows include: * New Universal Login * Authentication API dbconnections/signup endpoint
Require username on user profile	Requires username to be present across all operations that create or update a user profile on this connection. Will require username is present on the following: * Signup flows * Creating or updating a user via the Management API * Bulk user import
Username Length	Set the minimum and maximum values allowed for a user to have as username.

Configure or remove existing Attributes on a connection

All Attributes can be changed or deleted from your Auth0 Dashboard. Users cannot log in, sign up or reset passwords using the removed Attribute, and a minimum of one Attribute must remain active on every connection.

To change or remove an Attribute, navigate to the Attributes tab, then choose the … menu button next to an Attribute and select Configure or Remove from the dropdown menu.

Revert a connection

To revert a connection back to its original state, use the Management API Update a connection endpoint with an options object that does not include the attributes parameter, as shown below.

• If you use the options parameter, the entire options object is overridden. To avoid partial data or other issues, ensure all current parameters are present by copying the contents within the connections options object and including it in the PATCH call. The only parameter you should remove is attributes.
• If your tenant has username enabled as an Attribute, performing the following action requires you to modify your username settings. You’ll need to reconfigure your username settings if you choose this path.

{
"options": {
       }
}