Amazon FBA shipping is complex, and even experienced sellers make mistakes that cost them time and money. Based on our experience helping hundreds of Amazon sellers ship from China, here are the 15 most common mistakes — and how to avoid each one.

Mistake 1–5: Labeling and Packaging Errors

Mistake 1: Not Applying FNSKU Labels

What happens: Amazon can’t identify your products. Your shipment is either rejected at the warehouse or Amazon charges you $0.50–$2.00 per unit for their FBA Prep Service.

How to avoid:

• Always generate and apply FNSKU labels before shipping
• Apply labels at the factory or use a prep service in China
• Test-scan labels with your phone before shipping

Mistake 2: Using Transparent or Low-Quality Labels

What happens: Amazon’s scanners can’t read transparent, smudged, or faded labels. Units are marked as “unidentifiable” and may be destroyed or returned.

How to avoid:

• Use only white, opaque label stock
• Print with a thermal printer (Zebra, Dymo) or high-quality laser printer
• Avoid inkjet printers — ink can smudge during transit

Mistake 3: Insufficient Packaging for International Shipping

What happens: Products arrive at Amazon FBA damaged. Amazon may refuse to receive damaged units, and you lose both the product cost and shipping cost.

How to avoid:

• Use ECT-32 or 200 lb burst strength corrugated cartons
• Wrap fragile items in minimum 2 layers of bubble wrap
• Fill empty space in cartons with packing material (air pillows, peanuts)
• Request photos of packed cartons from your supplier before shipping

Mistake 4: Missing Suffocation Warnings on Poly Bags

What happens: Amazon rejects your shipment or charges prep fees to re-bag your products with compliant poly bags.

How to avoid:

• Purchase poly bags with pre-printed suffocation warnings (available on Alibaba)
• Warning text must be in at least 10-point font
• Required for all poly bags with openings 5 inches or larger

Mistake 5: Multiple Barcodes Visible on Products

What happens: Amazon’s scanners read the wrong barcode, leading to inventory mix-ups, incorrect product fulfillment, and customer complaints.

How to avoid:

• Cover all existing barcodes (UPC, EAN, manufacturer barcodes) with opaque labels
• Only the FNSKU barcode should be visible and scannable
• Check each unit before packing into cartons

Mistake 6–10: Documentation and Customs Errors

Mistake 6: Incorrect or Incomplete Commercial Invoice

What happens: Customs holds your shipment for inspection, causing delays of 3–10 days. In severe cases, customs may seize the shipment.

How to avoid:

• Include: seller name, buyer name, product description, HS code, quantity, unit value, total value, country of origin, Incoterms
• Use clear, specific product descriptions (not “gifts” or “samples”)
• Match the commercial invoice to the packing list exactly

Mistake 7: Wrong HS Code Classification

What happens: You pay the wrong duty rate — either overpaying (losing money) or underpaying (facing penalties and back taxes from CBP).

How to avoid:

• Use the US Harmonized Tariff Schedule (hts.usitc.gov) to find the correct code
• Consult a licensed customs broker for complex products
• Verify the duty rate before shipping to calculate landed cost accurately

Mistake 8: Not Filing ISF (Importer Security Filing) on Time

What happens: US Customs (CBP) imposes a $5,000–$10,000 penalty for late or missing ISF filings for sea freight shipments.

How to avoid:

• File ISF at least 24 hours before vessel loading at the Chinese port
• If shipping DDP, confirm your freight forwarder handles ISF filing
• If shipping FOB, arrange a US customs broker to file ISF

Mistake 9: Under-Declaring Shipment Value

What happens: Some sellers declare a lower value to reduce customs duties. If caught, CBP imposes penalties (2x–4x the duty amount), seizes goods, and may flag you for future inspections.

How to avoid:

• Always declare the true transaction value (what you actually paid the supplier)
• Include all costs: product price, inland freight, insurance, packing
• Don’t declare “samples” or “gifts” for commercial shipments

Mistake 10: Shipping Restricted Products to FBA

What happens: Amazon refuses the shipment, destroys the products, or suspends your selling account.

How to avoid:

• Check Amazon’s restricted products list before listing
• Verify if your product requires Hazmat review (batteries, aerosols, flammable liquids)
• Obtain necessary certifications (FCC, FDA, CPSIA) before shipping
• If shipping batteries, prepare UN38.3 test reports and MSDS

Mistake 11–15: Strategy and Planning Errors

Mistake 11: Shipping Only by Air Freight (Ignoring Sea Freight)

What happens: You spend 3–5x more on shipping than necessary, significantly reducing your profit margins.

How to avoid:

• Use air freight only for urgent restocking or new product launches
• Switch to sea freight once you have consistent sales volume
• Implement a hybrid strategy: air freight first batch, sea freight for restocks

Mistake 12: Not Maintaining Inventory Buffer

What happens: You run out of stock during transit, losing sales and damaging your Amazon ranking. Stockouts can drop your BSR (Best Seller Rank) by 50%+ in just a few days.

How to avoid:

• Maintain 30–45 days of inventory at Amazon FBA at all times
• Set reorder triggers: when FBA inventory drops to 45 days, place a new order
• Use Amazon’s Inventory Performance Index (IPI) to monitor stock health
• Consider Amazon’s automated replenishment tools

Mistake 13: Shipping During Peak Season Without Planning

What happens: Port congestion, FBA warehouse delays, and higher freight rates during August–December. Shipments take 2–3x longer than normal.

How to avoid:

• Ship Q4 inventory by August 15 at the latest
• Book freight 3–4 weeks in advance during peak season
• Budget for 30–50% higher freight rates during peak
• Have backup shipping methods ready (e.g., switch to air freight if sea is delayed)

Mistake 14: Choosing the Wrong FBA Warehouse

What happens: Amazon assigns your shipment to a warehouse far from the port of entry, adding 5–10 days of trucking time and higher inland transportation costs.

How to avoid:

• Amazon assigns warehouses automatically — you can’t choose
• However, you can split shipments to reduce inland costs
• Ship to the warehouse Amazon assigns and use LTL for cost efficiency
• If the assigned warehouse is on the East Coast but your goods arrive at a West Coast port, ask your forwarder about all-water service via Panama Canal

Mistake 15: Not Tracking Shipment Status

What happens: You don’t know where your shipment is or when it will arrive. You can’t plan inventory restocking or respond to delays.

How to avoid:

• Get tracking numbers from your freight forwarder for every shipment
• Check Amazon Seller Central daily for shipment status changes
• Set up email/SMS alerts for status updates
• Maintain communication with your forwarder — ask for weekly status reports

Avoid Costly Mistakes with Expert Help

Skyler Logistics has helped hundreds of Amazon sellers ship from China without mistakes. We handle labeling, packaging, documentation, customs, and delivery — so you can focus on growing your business.