Expense Validation Reference

Summary

Validation is distributed across UI checks, command orchestration, domain invariants, dependency results, and persistence constraints.

Developers, QA, support, architects, and product owners.

Area	Rule	Layer	Error category	Source	Maturity
Create UI	Category and positive amount	ESS client	Client validation	ESS page	Confirmed
Compatibility create UI	Employee and positive amount	Client	Client validation	HR Operations page	Confirmed
Claimant	At least one claimant reference	Domain	Validation	Claim aggregate/value	Confirmed
Category	Non-empty bounded value	Domain	Validation	Category value	Confirmed
Money	Positive amount and supported currency shape	Domain	Validation	Money value	Confirmed
Approve	Pending only; workflow-managed direct decision blocked	Command/domain	Conflict	Claim commands	Confirmed
Reject	Pending only and reason required	Command/domain	Validation/conflict	Claim commands	Confirmed
Paid	Approved only	Command/domain	Conflict	Claim commands	Confirmed
Delete	Pending and claimant ownership rule	Command	Conflict/forbidden	Claim commands	Confirmed
Receipt upload	Content and filename required; content must decode and be non-empty	Command	Validation	Receipt commands	Confirmed
Workflow callback	Supported decision/subject and claim resolution	Command	Validation/not found/conflict	Claim commands	Confirmed
Compatibility approval	Frozen-period guard	Application	Conflict	Compatibility service	Confirmed
Edit claim	No update command	All	Not implemented	Source inventory	Not implemented

Category policy, maximums, receipt type/size governance, localized errors, and complete authorization validation require confirmation.

UI/salary-ui/apps/client-hrms-portal/src/ess/EssPages.tsx
UI/salary-ui/apps/client-hrms-portal/src/pages/hr/HrOperationsPage.tsx
microservices/src/expense-service/Domain/Expense/ExpenseClaim.cs
microservices/src/expense-service/Domain/Common/ValueObjects.cs
microservices/src/expense-service/Application/Commands/ExpenseClaimCommands.cs
microservices/src/expense-service/Application/Commands/ReceiptCommands.cs