Payment & Financial Workflows

Every step that moves money is expensive to get wrong: double charges, missing refunds, records that do not match accounting — and each flow depends on several external systems.

Model the payment lifecycle as explicit states, make bank and provider calls idempotent, and keep financial records reconcilable with ERP, accounting and e-document processes.

• One correct outcome despite repeated callbacks and timeouts
• Partial refunds and cancellations on installment payments
• Consistency and reconciliation with external systems