About RED unlock code
A code that allows the provisioning servers to accept a new configuration for a RED.
If you're configuring a RED for the first time, leave the unlock code blank. If the device has been set up previously on another Sophos firewall, type the unlock code.
The unlock code is sent to the email address you provided when you turned on the RED provisioning service.
Retain the unlock code. You'll need the code if you want to set up the RED on another firewall.
Different unlock codes are generated for each deployment method. For subsequent deployments, make sure that you use the corresponding unlock code.
If you can’t find the unlock code, contact Sophos Support.