How EsgaSIS works
It is a real calculation and a deliberately narrow one. It uses the same factor registry and the same engine as the full inventory, so the arithmetic is identical — but it asks about every Scope 1 and Scope 2 source the registry holds and nothing beyond them, so its boundary is narrow and it says so on the face of the PDF. It is a screening estimate, not an inventory.
What it is good for: answering a customer who has asked for a number, quickly, with a stated boundary and named factors. Whether that is what your customer wants is their call — ask them before you spend time on anything larger.
What it is not good for: a published sustainability report, a reduction target, or any claim of completeness. It covers the activities it asked about and excludes the rest explicitly, and the exclusions are printed rather than hidden.
Waste, water and everything else in Scope 3 are outside it for every business, whatever country you are in. They are collected in the full inventory instead, from the person who holds that bill. The PDF lists them as exclusions rather than leaving them to be assumed.
The questions themselves depend on your country, because the factors do. In the full inventory a Malaysian business is not asked about waste at all: there is no Malaysian waste factor in the registry, and the software will not substitute Singapore’s incineration model for landfill.