I noted from another forum answer by @Johannes Boonstra (Victron Energy Staff), that 3 phase asymmetrical systems are an option.
Different numbers of multi's on each phase.
I understand the need for AC and DC cabling symmetry within those confines.
However, when I look at the ESS assistant and the PV assistant the first message that flashes up is that there must be a symmetry of multi and PV inverters.
In an off-grid set-up, if I want an asymmetrical system as far as Multi's go, do I have to forgo the option of AC coupling?