Most rejections aren’t because the barcode is “wrong”. They happen because labels are hard to scan at speed: glare, folds, low DPI, bad margins, or missing box content labels. A five-minute check now can prevent a five-day delay later.
Clear tape can reflect lights and scanners, making barcodes unreadable even if the print is perfect.
Apply labels after taping, or keep the barcode area free of glossy tape.
Draft mode, ink bleed, or low resolution collapses the quiet zone and the gaps between bars.
Use clean printing and leave enough quiet-zone margin around the code.
If the label wraps over an edge, scanners can’t capture the full barcode in a single read.
Place labels flat and central. Avoid corners, seams, and curved surfaces.
If the retail barcode is still visible next to your FNSKU, the system may scan the wrong one.
Your FNSKU must fully cover the retail barcode. If you’re unsure what you need, don’t guess.
Missing, incomplete, or mismatched box content labels can fail automated intake checks.
Build the correct PDF417 label per box and verify shipment ID and quantities.
Fees vary by marketplace and situation, but these are the common outcomes sellers report when labels aren’t scan-ready. Treat this page like a final pre-flight check.
Confirm the right barcode, confirm the label stock and margins, and generate scan-ready labels locally in your browser. No accounts, no data storage, no guesswork.