WhatsApp-based two-factor authentication (2FA) allows you to receive your 6-digit login verification codes directly via WhatsApp, on your phone or desktop app. This provides a convenient and secure alternative to email or authenticator app–based 2FA.
This article explains what is required and how users can configure WhatsApp as their 2FA method once it has been enabled for their SIX ERP tenant.
WhatsApp 2FA is a paid add-on service for SIX ERP.
It must be activated for your environment by SIX ERP or your system administrator.
This article does not cover the technical or administrative setup for WhatsApp itself; it only explains how end users configure it once the feature is available.
If you do not see WhatsApp as an available MFA method in your MFA Management screen, contact your administrator or SIX ERP support to verify whether:
The WhatsApp add-on is included in your contract, and
It has been enabled for your tenant.
To configure WhatsApp 2FA as a user:
Log in to SIX ERP with your username and password.
Open your MFA menu item (usually in your personal/user menu).
Click on MFA Management.
You will see a list of available MFA methods (e.g. Email, Authenticator App, WhatsApp, etc.).
Once you are on the MFA Management screen and WhatsApp is available as a method:
Find the card labeled with the “WhatsApp” icon
Next to it, you will see a slide toggle (slider).
Click the slide toggle to enable WhatsApp as a 2FA method.
The slider should switch to the ON/active position.
After enabling the slider, a phone number field will be available (if not already visible).
In this field:
Enter the phone number that is connected to your WhatsApp account.
The number must be entered in full international format, including:
The “+” sign
The country code
The complete phone number, without missing digits
Example:+359889686829
Make sure:
You own and actively use this number on WhatsApp.
The number matches the device(s) where you expect to receive your codes (phone and/or WhatsApp Desktop linked to that phone).
To finalize the setup:
Double-check:
The WhatsApp method is enabled (slider ON).
Your phone number is correctly entered in full international format.
Click SAVE at the bottom or top of the MFA Management screen.
If you do not press SAVE, your WhatsApp configuration will not be stored, and 2FA via WhatsApp will not be used.
After WhatsApp 2FA is configured and saved, your next login flow will change:
Go to the SIX ERP login page.
Enter your username and password and submit.
If credentials are correct and WhatsApp is your active 2FA method, SIX ERP will:
Send a 6-digit verification code to your configured WhatsApp number.
On your phone or WhatsApp Desktop:
Open WhatsApp and look for a message from the SIX ERP WhatsApp service.
Note the 6-digit code in the message.
On the SIX ERP Two-Factor Authentication screen:
Enter the 6-digit code from WhatsApp.
Confirm/submit the code to complete login.
If the code is valid and timely, you will be successfully logged in.
If the message does not appear:
Ensure your phone is connected to the internet (mobile data or Wi-Fi).
Verify that:
You entered the correct international number (including + and country code).
The number is the one actually used by your WhatsApp account.
Check if WhatsApp Web/Desktop is connected and the phone is online (if you rely on desktop).
If the issue persists, contact your administrator or support, as there may be a configuration or delivery issue on the system side.
Once WhatsApp is your 2FA method:
If you lose access to that WhatsApp number (SIM lost, number deactivated, device change without re-setup):
You will not receive the 6-digit codes, and
You will effectively be locked out of the system.
In this case, only an administrator can:
Disable WhatsApp 2FA for your account, or
Switch you to another 2FA method (e.g. Email or Authenticator App) so you can log in again.
See also:
Two-Factor Authentication in SIX ERP
Security in SIX ERP
Setting up email two-factor authentication
Setting up TOTP two-factor authentication with an Authenticator App
Troubleshooting two-factor authentication
Best Practices for maintaining secure connections to your ERP