Walmart seller glossary
Hazmat Classification
Hazardous-materials classification required for items containing lithium batteries, aerosols, flammables, or pressurized contents.
Required for WFS eligibility on any SKU with hazmat content. Submit DOT Hazmat classification paperwork before sending inventory.
Without classification: WFS rejects inventory at receiving and charges return-to-sender fees.
Related terms
Last reviewed May 13, 2026.
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