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Copper Lane Payments
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Layout
Trace
Story
Sheet
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100%
By actor
Refund the unavailable lamp
Steps
Flows
Data
Concepts
reads
writes
writes
Support checks the confirmed payment and its existing refund history.
Step 1
Support requests a separate refund; the service records its request and compatible processor confirmation.
Step 2
Request and confirm the €100 refund
Payment
Refund
Processor confirmation
Logical payment
Refund
Processor confirmation
Order
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Mira · customer
Actor
Merchant support
Actor
Checkout
Process
Confirmation handler
Component
Payment records
Data store
Payment service
Process
Fictional processor
External system
Copper Lane Payments
Boundary
Pay for the €100 lamp
use case
Refund the unavailable lamp
use case
Processor confirmation
Entity
Order reference
Entity
Payment
Entity
Refund
Entity
Payment state · illustrative PostgreSQL design
Database design
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