The main goal of completing a product mapping is to establish a link between your Amazon FBM listings and Katana items, ensuring order lines resolve to the right Katana variant and inventory pushes update the right Amazon listing.
The Amazon FBM integration can not be activated until product mapping is complete.
Step 1: SKU aliasing (if your SKUs don't match)
If your Katana SKUs are identical to your Amazon FBM seller SKUs (also called merchant SKUs), you can skip straight to step 2.
If they don't match, add an Amazon FBM SKU alias to each Katana variant in the SKU aliasing section of the FBM configuration. This is the same flow used by the Amazon FBA integration.
Add an alias directly on a variant, or bulk-upload aliases with a spreadsheet - the same file template as FBA aliasing, where a channel column defines whether each row is an FBA or FBM alias
If you also use the Amazon FBA integration, your existing FBA aliases are shown read-only for context - helpful when the same physical product has separate FBA and FBM SKUs
After uploading, you can check the result by opening an item in the Item screen and looking at the External identifiers tab
Tip: Selling the same product as both FBA and FBM under different Amazon SKUs? Give one Katana product an FBA alias and an FBM alias. Both Amazon offers then point to a single Katana item - one source of truth for stock and sales.
Good to know about aliases:
SKU matching is case-sensitive
When both an alias and a variant code would match, the alias takes precedence
The FBM alias is also the SKU Katana uses when pushing stock to Amazon and when matching incoming FBM order lines
Step 2: Product import
To complete product mapping, click the Import products from Amazon button in the Import products section.
Katana fetches your merchant-fulfilled (FBM) listings from Amazon and matches each one to a Katana item - first by FBM SKU alias (if added), then directly by variant code. If no match is found, a new Katana product is created:
The Amazon seller SKU becomes the variant code
The Amazon price is imported as the default sales price; cost is left blank for you to set later
The product category defaults to "Uncategorized" if the Amazon category can't be mapped
Product images stay managed in Amazon Seller Central - they aren't imported
In the context of the Amazon integration, Katana serves as the source of truth for product information. The import will not overwrite any existing product information in Katana - only products that don't exist in Katana are created from Amazon data.
While the import runs, a progress indicator shows how many listings have been processed. When it completes, you'll see a summary of how many products were matched, created, and errored:
Errored rows can be downloaded as a spreadsheet for review
After fixing the issues, re-run the import - only the previously errored rows are re-attempted
Once the integration sync is activated, the product mapping serves as the basis for pushing stock levels to the correct Amazon listings and for getting the correct items into Amazon FBM sales orders in Katana.
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