What is the function of "Self Test" in my X1-Boost inverter settings used for?

This function is only for only for CEI 0-21, User can test operating staus of inverter by choosing ”All Test”. When testing OK, the inverter will restart again and user can see the result from the “Test Report”. Before testing, make sure that the inverter is connected to the grid. All tests take about 6 minutes. And it will display "Success" and then "Delivery". For a single test item, it takes about a few seconds or minutes. Click "Test Report" to view the test results of all items. Also please be advised that this function is only available to Italy region.