I hope someone can help me.... I have a COC , which I originally received for the solar system with two lithium batteries, but this was changed to one battery twice the size in order to solve problems with the inverter cutting out when nighttime load shedding was happening. I asked the installer a new CoC and was told that the CoC does not mention the battery or batteries so the original CoC is still valid. When I asked the insurers to confirm that the CoC was valid they declined to do so and informed me that it was my responsibility to establish the validity of the CoC. This suggests to me that in the event of a claim there would be issues with the CoC. What do I do in this instance