Start here for any seller input: the setup surface of ONE domain, as the header of its Data Inputs page shows it. Read it before an import (target format, valid codes, import steps) and again after, to verify. domain: 'cogs' (cost of goods): default currency, each region's catalog SKU count and how many SOLD SKUs are missing COGS (profit overstated there), region inheritance policies, the valid region codes. soldSkusMissingCogs drops after an import. Covers Seller Central (3P) and Vendor Central (1P) accounts alike; when the scope holds a 1P account, vendorCentral lists it with the rules of a 1P cost (the vendor's OWN product cost, never Amazon's Shipped COGS; period-based only). Next: get_cogs_worksheet, import_cogs. 'fbm' (merchant-fulfilled shipping cost): per account, WHERE the seller ships (delivery countries with their share of FBM sales over 24 months, grouped in containers — Europe, North America, Far East — each led by its biggest destination), which countries have a shipping rate ('priced'), which read their container's rate ('container'), which fall on the rest-of-world rate ('row'), and which have NOTHING ('required' — the P&L cannot price those orders), plus packing/picking handling rates, per-product overrides and legacy rows; the zone/kind/rule vocabulary and how the P&L resolves a cost. Next: get_fbm_worksheet, import_fbm_zone_rates, import_fbm_costs. 'stock' (replenishment: reorder quantities, lead times, external / 3PL stock, supplier orders): per account, the stock regions it holds stock in, how many products are fully parameterised (the five reorder parameters — production lead time, transit from the factory to the warehouse, transit lead time to Amazon, target days of cover at Amazon and at the external location — resolved per product × region: product row → product 'ALL' row → seller default per region → seller default 'ALL' → fleet default (Nova's number for the warehouse, read from the seller's shipments and never typed; the Warehouse & 3PL page shows it in gold); a product whose five do not all resolve gets NO recommendation), the seller defaults, how many products carry an external (own warehouse / 3PL) count, how many supplier orders are open, and the last imports. Read it before query_inventory with includeReorder=true, to know whether the recommendations rest on entered parameters. Next: get_stock_worksheet, import_stock_params, import_external_stock, import_supplier_orders. 'supply_chain' (the TOP table of the Supply chain page): per account the production lead time; per warehouse its name and city, the territories it ships to with their transit to Amazon and target stock at Amazon, the target stock held at the warehouse and the transit from the factory, each number with its source ('yours' = the seller typed it, 'fleet default' = Nova's proposal from the fleet's shipments, the page's gold figure; beside a number the seller typed, fleetDefault is the proposal it replaces), how many products it holds and how many have a count; and the factory lines (goods straight from a country to a territory). Per warehouse also: key, the departure point the warehouse is named after, as query_inventory's departurePoints[].key names it; departurePoints, its other departure points (name, city, country, sharePct of the units shipped into its territories, shipments, units, status alive or past, factory) and otherPoints, the smaller ones folded (count, shipments, units); shippedToAmazonL12M, what it sent to Amazon over twelve months (units, shipments, onTheWay counts, and lastShipment, the date of its last plan, read from the name Seller Central gives a plan by default: null as soon as a plan of the window carries no readable date, since a seller who renames its plans would otherwise read its last default-named plan, months old, as its last shipment; undatedShipments counts those renamed plans, still listed by Amazon); onTheWay, its shipments on their way to Amazon (id, name, Amazon's status, phase, destination, units, unitsReceived, skus, created: null on a renamed plan); awdSharePct, the share of its units sent to Amazon through AWD, in %; freight, how its transit from the factory was read (zone, factory country, averageLotUnits, toConfirm when no factory shipment was read). Per account remote: the territories Amazon serves from another territory's stock. evidenceSince: the first day of the shipments read. Nova reads the warehouses from the seller's shipments: they are never configured. Next: set_stock_defaults (writes these numbers), import_supply_chain (takes a warehouse's name on its lines), get_supply_chain_products (the product lines). 'vat': PER ACCOUNT and per VAT region (EU, UK, Mexico, and OutsideEU read-only…), whether AMAZON prices the tax (VCS — then the seller's categories never reach the P&L) or the seller's product category does, with the count of SOLD SKUs Nova has no VAT for (profit wrong there); the account's default category; the full category referential (code + name, incl. the Nova codes A_NOVA_ZERO / A_NOVA_STANDARD / A_NOVA_REDUCED); how the P&L resolves VAT. Read the account you import for — verdicts are never pooled across accounts. Next: get_vat_worksheet, import_vat_categories, set_vat_default_category.