Compliance
Avoid the fees before they hit.
Amazon's prep and packaging rules change. Penalties don't wait. MarginLock enforces compliance gates at the point of packing — not after.
Capabilities
Catch violations before a label prints
Box compliance
Weight, dim, and tape requirements per marketplace. Stop boxes from leaving the warehouse out-of-spec.
Hazmat and prep gates
Per-SKU prep rules surfaced inline. Polybag, bubble, expiration, hazmat — every requirement gated, every miss flagged.
Fee penalty avoidance
Real-time exposure: what penalty fees would have hit if every shipment shipped today. Drives fix priorities.
Audit trail
Every compliance decision logged. If Amazon disputes, you have the evidence.
US box compliance
The 50 lb rule — and the audit when you miss it.
FBA US enforces a hard 50 lb cap per box (with carve-outs). One overweight box across a 200-box shipment becomes hours of reboxing and a punitive fee. MarginLock catches it before the tape gun comes out.
- Per-box weight forecast as you pack.
- Per-marketplace rule customization — US, EU, JP, BR.
- Block-or-warn modes per facility.
MarginLock
Compliance gates
Ready to label
3 boxes need review
Attention
Overweight risk caught
The exception is attached to the shipment record so the operator can resolve it before the workflow moves forward.
Compliance gates
The cheapest Amazon penalty is the one caught before label generation.
Compliance checks run inside the packing workflow, where operators can still fix box weight, mixed prep, hazmat, and dimension issues before the shipment becomes expensive to unwind.
- 01
Choose the SKUs that are ready to move
Inventory, reserved units, prep requirements, and inbound-plan status stay in one workspace before a carton is opened.
- 02
Pack cartons with compliance gates active
Weight, size tier, prep category, hazmat, and mixed-box rules are checked before labels print.
- 03
Create and ship the FBA plan
Amazon inbound milestones, placement decisions, labels, and shipment status are tracked as one operating loop.