what are the major features of a schematic report?

I think that these links may help you with the understanding what schematic report is. I am not good at it at all

https://www.researchgate.net/figure/281620847_fig3_Fig-5-Examples-of-a-schematic-report-for-an-open-quarry-and-a-closed-quarry-location

http://2012books.lardbucket.org/books/designing-business-information-systems-apps-websites-and-more/s15-02-schematic-report.html