Individual battery disconnects for parallel batteries

Are you supposed to have individual battery disconnects for each battery in a parallel battery system ( lithium batteries), and a main one for the inverter. Heard that it is an upcoming SANS regulation

It makes things easier to split the banks when one has to. SANS or te not.

One thing that is stuck in my mind though, every single connector one inserts adds up to a total drop in volts. Some clever people here taught me that.