Expense Type Service

Core business logic service that manages the expense type catalogue and enforces all associated business rules. Handles CRUD operations for expense types scoped to each organisation, evaluates mutual-exclusivity constraints, validates documentation requirements, and re-validates submitted expenses against current rules on the backend to prevent race conditions between client cache and rule changes.

Feature: Expense Types & Requirements

expense-type-service

• Manage organisation-scoped expense type CRUD operations
• Evaluate mutual-exclusivity rules for expense type combinations
• Validate documentation requirements against submitted expense data
• Re-validate expenses server-side against current rules at submission time
• Seed default expense type catalogues during organisation onboarding