Expense Payment Events

Summary

ExpensePaid is an outcome event raised when an approved claim is marked paid. Expense does not execute or reconcile a payment through this event.

Confirmed flow

The aggregate rejects mark-paid transitions from any status other than Approved. Payroll updates its projection status to Paid, which excludes that projection from the set counted as approved reimbursement. Notification resolves a paid notification intent.

Not implemented

• Payment initiation event
• Payment batch event
• Payment settlement or reconciliation event
• Payment failure or reversal event
• Consumer acknowledgement back to Expense

Requires confirmation

The authoritative payment executor, reconciliation ownership, correction behavior, and relationship between paid outcome and external settlement require confirmation.

Source References

• microservices/src/expense-service/Domain/Expense/ExpenseClaim.cs
• microservices/src/expense-service/Domain/Expense/ExpenseDomainEvents.cs
• microservices/src/expense-service/Infrastructure/ExpenseDbContext.cs
• microservices/src/contracts/Events/ExpenseLifecycleEvents.cs
• microservices/src/payroll-service/Messaging/PayrollReadModelConsumer.cs

Related Articles

• Expense events documentation
• Expense technical documentation
• Expense database documentation

See Also

• Expense API documentation
• Expense module

Keywords

• Expense events
• Payment Events
• Integration contracts

Revision Information

• Status: Draft
• Last reviewed: 2026-07-16
• Review cycle: Quarterly