Fictional editorial exercise. Keep inputs separate from reference answers. Downloads do not establish accepted business results.

In Shopify product preparation, load supplier.csv. Check all mappings, choose USD and confirm. Export two rows, one handle and Blue/White variants; prices are selling prices, not costs. Status is draft and Published on online store is false. Keep source-products.json: cost/material are not mapped into this draft. duplicate-option.csv must report a duplicate combination on row 3; repair from the confirmed White source, not by inventing a new handle. In cross-platform mapping, use item_sku,item_name,standard_price and map sku/title/price. This three-column exercise is not an official Amazon submission template.
