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# Prefill API - Guide

## Table of Contents

1. [How Prefill Works](/prefill-api-guide/how-prefill-works)
2. [Authorization](/prefill-api-guide/authorization)
3. [Submit Prefill Data](/prefill-api-guide/submit-prefill-data)
4. [Field Definitions](/prefill-api-guide/field-definitions)
5. [Error Handling](/prefill-api-guide/error-handling)
6. [Environments & Testing](/prefill-api-guide/environments-testing)
7. [Security & Privacy](/prefill-api-guide/security-privacy)
8. [Idempotency, Retries, Timeout, and Limits](/prefill-api-guide/idempotency-retries-timeout-and-limits)
9. [Ownership & Support](/prefill-api-guide/ownership-support)