Home › Merge Guides › Walmart Marketplace + Faire › Inventory Reconciliation walkthrough
The Best Way to Merge Walmart Marketplace and Faire Data for Inventory Reconciliation
If you're doing inventory reconciliation by hand right now, here's the fastest path from "two exports" to "one usable sheet," and why the manual version keeps breaking.
Step by step
- Decide your target columns once. Most people settle on Date, Channel, Order ID, and Total — set that up in CSV Experts and you won't redo it.
- Import the Walmart Marketplace file first. The first time you see this file shape, you map each of its columns to your target list.
- Import the Faire file the same way. Its columns get mapped once too — after that, every future file with this shape merges with no extra clicks.
- Check the merged totals. Dates and numbers are normalized automatically, so a European "24,00" and a US "24.00" both land as the same value.
- Export. CSV or Excel, ready for inventory reconciliation.
What actually goes wrong if you do this by hand
Walmart Marketplace gives you an Order Date column separate from the ship-by date, while Faire gives you an order date shown alongside a separate ship date for wholesale orders — line those up manually across a few hundred rows and it's easy to miscount a week. On top of that, Walmart Marketplace's export each order line can appear as its own row with a repeated order ID, similar to Shopify's line-item export, and Faire's quantities are per case/pack rather than per unit, which throws off totals if merged as if it were a retail export. Individually those are minor quirks; combined into one spreadsheet by hand, they're where most reconciliation errors for inventory reconciliation actually come from.
Why it matters for inventory reconciliation
Matching units sold against inventory counts requires the same product and quantity columns across every channel's export.
Just want the quick column-difference reference instead? See the short version.