Multiplus 2 Parallel Connection

Hi! New Victron user here, i’ve bought 8 months ago a Multiplus2 GX 48/5000 and a MPPT RS 450/100 for my little solar system, and it works very good. Now i want to expand my system and i bought a Multiplus 2 48/5000 for making a parallel with the main MP. Now, i know that the 2 unit must be identical model and have the same firmware, but i didn’t know that also the Parts Number must be the same.
So, the main MPGX Number Parts is: PMP482506 and SN is: HQ2306N, the other MP Parts number is: PMP482505, and the serial is HQ2343.
Is there any chance that the two unit will work in parallel?

Thanks for helping

Simone