> ## Documentation Index
> Fetch the complete documentation index at: https://auth0.generaltranslation.app/llms.txt
> Use this file to discover all available pages before exploring further.
# MfaCountryCodes
Class implementing the mfa-country-codes screen functionality
This screen allows users to select a country code for MFA phone number verification
```ts Example theme={null}
import MfaCountryCodes from '@auth0/auth0-acul-js/mfa-country-codes';
const mfaCountryCodes = new MfaCountryCodes();
// Get the available country codes and phone prefixes
const { screen } = mfaCountryCodes;
const { phone_prefixes } = screen.data
const {country_code, phone_prefix} = phone_prefixes[0]
await mfaCountryCodes.selectCountryCode({
country_code: 'US',
phone_prefix: '+1',
});
```
## Constructors
Creates an instance of MfaCountryCodes screen manager
## Properties
BrandingMembers} />
ClientMembers} />
OrganizationMembers} />
PromptMembers} />
ScreenMembersOnMfaCountryCodes} />
TenantMembers} />
TransactionMembers} />
UntrustedDataMembers} />
UserMembers} />
## Methods
Error[]}>
Retrieves the array of transaction errors from the context, or an empty array if none exist.
An array of error objects from the transaction context.
Navigates back to the previous screen
```typescript Example theme={null}
import MfaCountryCodes from '@auth0/auth0-acul-js/mfa-country-codes';
const mfaCountryCodes = new MfaCountryCodes();
await mfaCountryCodes.goBack();
```
CustomOptions}>
Optional custom options to include with the request
Selects a country code from the available options
```typescript Example theme={null}
import MfaCountryCodes from '@auth0/auth0-acul-js/mfa-country-codes';
const mfaCountryCodes = new MfaCountryCodes();
// Get the available country codes and phone prefixes
const { screen } = mfaCountryCodes;
const { phone_prefixes } = screen.data
const {country_code, phone_prefix} = phone_prefixes[0]
await mfaCountryCodes.selectCountryCode({
country_code: 'US',
phone_prefix: '+1',
});
```
SelectCountryCodeOptions}>
The options containing the country code selection action
**Properties**
The country code (e.g. 'US', 'GB')
The phone prefix (e.g. '+1', '+44')