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Open-Policy Exchange
~6 min to deploy
Amazon Oversell & Fee Gate
Blocks fulfilling an order for stock oversold across channels, and checks referral plus fulfillment fees against the margin floor.
For: Amazon sellers running multi-channel inventory
SOC 2 CC8.1ISO 27001 A.8.34Fulfillment evidence trail
What it enforces
Over-selling gate
Blocks fulfilling an order that would ship more units than the system of record holds.
Fee-adjusted margin floor
Blocks an order whose margin, after referral and fulfillment fees, falls under the floor.
Cross-channel reservation restraint
Restrains a fulfillment when the same units are already reserved on another channel.
amazon-oversell-and-fee-gate.yaml
# Amazon Oversell & Fee Gate
# Fork: set your own fee assumptions and floor per category.
apiVersion: decionis.dev/v1
kind: PolicyPack
metadata:
name: amazon-oversell-and-fee-gate
surface: amazon
workflow_key: order_fulfillment
standards: [SOC2-CC8.1, ISO27001-A.8.34]
defaults:
mode: shadow
emit_dossier: true
margin_floor_pct: 8
rules:
- name: over_selling_gate
when: "action == 'order.fulfill'"
decision: |
BLOCK IF units_ordered > units_available
ALLOW OTHERWISE
reason_code: oversold_inventory
- name: fee_adjusted_margin_floor
when: "action == 'order.fulfill'"
decision: |
BLOCK IF (order.total - order.cost_basis - fees.referral - fees.fulfillment) / order.total < margin_floor_pct / 100
ALLOW OTHERWISE
reason_code: fee_adjusted_margin_below_floor
- name: cross_channel_reservation_restraint
when: "action == 'order.fulfill'"
decision: |
RESTRAIN IF inventory.reserved_on_other_channel == true
ALLOW OTHERWISE
reason_code: units_reserved_elsewhere
Fork it, change the thresholds to match your environment, and deploy in shadow mode first — it defaults to listen-only so nothing in your live pipeline changes.
How to install it
Follow the install path for this surface, then paste the forked YAML as your policy config.