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Print WFS GTIN Item Labels (ad-hoc)

POST 
/api/walmart/:integrationInstance/wfs/item-labels

Render printable GTIN item labels (PDF) for arbitrary WFS-bound SKUs — the inbound builder's per-row "Print GTIN label". Walmart exposes NO item-label API (Seller Center only), but WFS item labels are plain GTIN-14 / UPC-12 barcodes (no FNSKU-style Walmart identifier), so SKU.io renders the PDF locally from the listing's GTIN/UPC (fallback UPC → product barcode), mirroring the Amazon FBA item-label UX.

Authorization

Any valid API token can call this endpoint — no specific scope required. Manage tokens.

Request body:

  • items (required, array, 1–500) — each: { sku (required string), quantity (required integer 1–3000) — number of labels to print for that SKU }.
  • format (optional): 'letter_30' (default — Avery-5160-style letter sheet, 30 labels of 2⅝" × 1") or 'thermal_2_25x1_25' (one 2¼" × 1¼" label per page).

Hard cap 3,000 labels per render. Barcode symbology is chosen by code length (12 → UPC-A, 13 → EAN-13, 14 → ITF-14, else Code 128). Each label shows product name, barcode, the numeric GTIN/UPC, and the SKU.

Response is the raw PDF (Content-Type: application/pdf, attachment). A SKU without a GTIN/UPC returns 422 before any rendering. Requires a Bearer token.

Request​

Responses​

OK

Response Headers
    Content-Type
    Content-Disposition