| 1 | Platform Roles | Tenants, team members, admins, and FIRS |
| 2 | How It Works | ERP → middleware → FIRS pipeline |
| 3 | System Architecture | Multi-tenant architecture and supported ERPs |
| 4 | Invoice Standardization | FIRS data dictionary and input format rules |
| 5 | Invoice Schema | Tenant, team member, and API key data models |
| 6 | Rendered Invoice Example | End-to-end walkthrough from onboarding to transmission |
| 7 | Authentication | API key, JWT, and admin key usage |
| 8 | API Reference | All endpoints with request/response examples |
| 9 | Error Reference | Error messages and how to handle them |
| 10 | HTTP Status Codes | Status code reference and rate limits |
| 11 | Security & Compliance | FIRS compliance, PEM credentials, data security |
| 12 | Messaging and Routing Protocols | Event routing, webhooks, and pipeline configuration |