implement-payment-flow

End-to-end payment flow orchestration coordinates PSP adapters, rail adapters, and the double-entry ledger using deterministic sequencing from initiation to posting. It applies modular, hexagonal architecture with ports and adapters for seamless transaction processing across multiple payment providers and rails.

Integrating SEPA, SWIFT, and ACH rails with a double-entry ledger is best handled through modular rail adapters using a port-based architecture. This ensures balanced transaction lines, event-driven ordering, and ledger posting while supporting multi-currency transactions and auditing across different payment networks.

Yes, hexagonal architecture supports multi-currency payment initiation and settlement by using modular ports and adapters for PSPs like Stripe, Adyen, and PayPal. This design enables production-grade payments with resilience, compliance checks, and auditing across different currencies and transfer types.

Payment reconciliation across PSP adapters and internal transfers works through deterministic sequencing and event-driven ordering that coordinates settlement with ledger posting. The architecture applies balanced transaction lines and compliance checks to ensure auditable, consistent reconciliation across all payment scenarios.

Yes, modular adapters are required to handle payment approval and compliance checks effectively. A port-based architecture allows independent PSP and rail adapters to enforce compliance while maintaining resilience, multi-currency support, and full auditing throughout the initiation, approval, and settlement process.