POS Module

Terminal management, cashier sessions, cart synchronization, receipt finalization, returns, reservations, transfer requests, and fraud-alert review. Supports idempotent payment finalization and session-bound checkout behavior.

• Retail terminal workflows
• Session and cashier management
• Fast transaction entry
• Discount and pricing support
• Receipt and checkout flow

Workflow 1: open session -> maintain active cart -> complete receipt -> close session with cash reconciliation. Workflow 2: create reservation -> optional transfer planning -> release or fulfill. Workflow 3: create return -> stock intake movement -> fraud risk scoring -> manager review.

1. open session -> maintain active cart -> complete receipt -> close session with cash reconciliation
2. create reservation -> optional transfer planning -> release or fulfill
3. create return -> stock intake movement -> fraud risk scoring -> manager review

Core records include POSTerminal, POSSession, POSCart, POSPaymentTransaction, POSReceipt, POSReturn, POSReservation, and POSFraudAlert. Payment and return records must link to receipt context and actor metadata.

• POSTerminal
• POSSession
• POSCart
• POSPaymentTransaction
• POSReceipt
• POSReturn
• POSReservation
• and POSFraudAlert. Payment and return records must link to receipt context and actor metadata

Receipts require balanced payment totals; closed sessions cannot accept new carts; reservation quantities must be positive; terminal WMS mapping is required for stock movements. Fraud review states should be auditable and role-restricted.

Strong integration with WMS operations for stock movement and reservations, Inventory for product availability, Payments provider status, and Accounting for daily settlement and reconciliation.

• Strong integration with WMS operations for stock movement and reservations
• Inventory for product availability
• Payments provider status
• and Accounting for daily settlement and reconciliation

Sales per terminal and session, average basket, refund ratio, cash difference at close, reservation fulfillment rate, and fraud-alert resolution time.

• Sales per terminal and session
• average basket
• refund ratio
• cash difference at close
• reservation fulfillment rate
• and fraud-alert resolution time

These capabilities define what this module can execute and what outcomes it owns.

• Retail terminal workflows
• Session and cashier management
• Fast transaction entry
• Discount and pricing support
• Receipt and checkout flow

Use cases define where this module should be prioritized in rollout and adoption planning.

• Run physical store sales efficiently
• Reduce retail checkout friction
• Track operator and session activity

Use this lifecycle sequence as the baseline for SOP documentation and team onboarding.

1. open session -> maintain active cart -> complete receipt -> close session with cash reconciliation
2. create reservation -> optional transfer planning -> release or fulfill
3. create return -> stock intake movement -> fraud risk scoring -> manager review

• Missing required data at transaction entry
• Unauthorized status transition attempts
• Cross-module reference mismatch after updates
• Duplicate mutation attempts from retries
• Delayed downstream synchronization and stale dashboards

1. Define owner, scope, and process objective
2. Configure lifecycle, permissions, and defaults
3. Run pilot workflows including edge cases
4. Validate KPI outputs and integration behavior
5. Train users and publish SOP guidance
6. Execute staged go-live with checkpoint review