Download the template from the CSV Import page — the column headers must match it.
Supported formats: CSV or TSV (UTF-8). Working in Excel? Save/export the sheet as CSV first — XLSX files themselves cannot be uploaded. The first row is the header.
Rows are matched to existing SKUs by ASIN or your internal SKU code: a matching SKU is updated, an unmatched row creates a new one. Blank cells on an update leave the existing value untouched — they do not wipe it.
Validate, then confirm
The import runs in two steps. First the file is validated: you see a preview with per-row errors (bad numbers, unknown materials, over-limit rows). Nothing is written yet. Only when the preview is clean do you confirm, which applies the rows inside your plan's SKU limit.
Pitfalls to check before uploading
Row width — a row with more or fewer cells than the header is dropped without an error. If the imported count is lower than expected, check for stray commas or merged cells.
Percentages — recycled-content (pcr_pct) values should be 0–100.
Materials — use the material names shown in the template notes; unknown names fail validation.
After the import
Spot-check a few rows in SKU Master and Packaging. Re-uploading a corrected file is safe — rows matching an existing ASIN or SKU code update that SKU instead of duplicating it.
