Using uneven strings on 2 mppt inputs

[Pedthr0]

I am trying to model a system with five (5) SMA ST2500TL-30 dual MPPT inverters with uneven strings (1 X 20 and 3 X 21). I have set up 2 sub arrays, one for each mppt (per inverter) and selected the "Use Multi-MPPT feature" and set the "Nb of MPPT inputs" = 1 for each sub array. this seems to work.

The problem is; I am using five (5) inverters in the project but I am only allowed to create 8 sub arrays = 4 inverters.

Questions:

1. is the approach of assigning the subarrays to the mppts correct?

2. how can I get this done for five (5) inverters?

[dtarin]

Do the 5 inverters each have (1) 20 string and (3) 21 strings? If so, you will create two sub arrays, each with 5 inverters and multi mppt checked. Subarray A has 5x20, subarray B has 15x21