# Page Not Found

The URL `4-interoperability-architecture/4.2-architecture-patterns` does not exist.

You might be looking for one of these pages:
- [4.3 Architecture Patterns](https://specs.govstack.global/architecture/4-interoperability-architecture/4.3-architecture-patterns.md)
- [4.4 Architecture Scope](https://specs.govstack.global/architecture/4-interoperability-architecture/4.4-architecture-scope.md)
- [4.2 Functionality Design](https://specs.govstack.global/architecture/4-interoperability-architecture/4.2-functionality-design.md)
- [4.1 GovStack Interoperability](https://specs.govstack.global/architecture/4-interoperability-architecture/4.1-govstack-interoperability.md)
- [4 Interoperability Architecture](https://specs.govstack.global/architecture/4-interoperability-architecture.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://specs.govstack.global/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://specs.govstack.global/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/architecture/4-interoperability-architecture/4.3-architecture-patterns.md`)
- Use `Accept: text/markdown` header for content negotiation