There are several benefits to using the SFT2841 120 authorization code, including:
Sepam relays with firmware version 3.0 or higher (introduced around 2010) disabled generic software-based codes. For these units, you need to generate a code using the utility (available only to Schneider Electric partners) or request it via a support ticket. The generation algorithm uses:
Schneider Electric transitioned to a "Registration" model rather than an "Authorization" model in later versions. Starting with Version V14.1 and continuing through the current V17.x releases, the software no longer requires the manual input of an "Authorization Code" to function.
Re-install the software tool using either the master serial code or the updated v17.4 architecture to reset the licensing components entirely. ⚡ Mapping the MES120 Hardware Module Once Authorized