Here is a summary of the required lamacoid placement based off code/local requirements:

Meter
Warning – Interconnected Photovoltaic source
Single Line Diagram
Photovoltaic system equipped with rapid shutdown

Utility Disconnect
Utility disconnect, do not lock
Warning – Multiple power supplies
Warning – Electric shock hazard
Photovoltaic AC Disconnect – AC numerical values (whole system)

AC combiner panel (on specified jobs)
Warning – Multiple power supplies
Warning – Electric shock hazard
Photovoltaic AC Disconnect – AC numerical values (whole system)
Photovoltaic AC Disconnect – AC numerical values (Individual strings/ breakers)

Panel
Warning – Multiple power supplies
Warning – Electric shock hazard
Photovoltaic AC Disconnect – AC numerical values (whole system)
Single line diagram
Photovoltaic system equipped with rapid shutdown
Warning – Inverter output location (Located as close to the solar breaker as possible)

Other Lamacoid locations
All junction boxes including on the roof, in basement, beside panel, that are part of the solar circuit must have a “Multiple power supplies” label put on.