Three sources. You prepare none of them.
Your webshop
What sold, at what price, and how fast. Shopify, WooCommerce, Lightspeed, a CSV export.
Your ERP
What it cost you and what it is still carried at. Optional — many companies your size do not have one.
Your warehouse
What is physically on the shelf, per size, per location. Your own or your 3PL.
We do not read customer data, and we read nothing you have not switched on.

