Amazon UK fulfillment centers process millions of units every week. To maintain robotic efficiency, Amazon strictly enforces automated scanning and sorting standards. If an inbound shipment violates packaging rules, Amazon issues Inbound Performance Alerts, assesses unplanned prep charges, and may temporarily restrict your inbound shipping privileges.
Top 5 Inbound Defects in UK Fulfillment Centers
1. Unscannable or Obscured Barcodes
When applying FNSKU labels, ensure the manufacturer barcode (UPC/EAN) is completely covered. Thermal printing must be sharp and smudgeless. Never place barcodes over box seams, curved edges, or corners.
2. Missing Suffocation Warnings on Polybags
In the UK, any polybag with an opening of 5 inches (12.7 cm) or larger must display a clear suffocation warning in readable font. The bag must be transparent and have a minimum thickness of 1.5 mil (38 microns).
3. Exceeding Carton Weight & Dimension Limits
Standard master cartons sent via Small Parcel Delivery (SPD) must not exceed 23 kg unless containing a single oversize item. Any box weighing over 15 kg must have heavy package warning labels affixed on all four sides.
4. Improper Multipack & Bundle Labeling
Bundled units must be securely packaged together in shrink wrap or polybags and clearly marked with a high-contrast "Sold as Set - Do Not Separate" or "Ready to Ship" label so FC staff do not split the items.
5. Liquid & Fragile Product Leaks
Liquids without a double seal must be bagged and sealed to withstand a 3-foot drop test onto solid concrete without leaking.
Protect Your Account Health with PrepBase UK
At PrepBase UK, every unit undergoes our strict 5-Point Quality Check before dispatch. We guarantee 100% Amazon compliance so your inventory is received without flags, stock is active faster, and your Buy Box share is maximized.