♻️ 7. Error Handling & Retry Logic

Summary:
The API suite includes standardized error codes and guidelines for retry logic, especially when dealing with document upload or extraction delays.

HTTP Status Codes:

• 200 OK – Successful request

• 400 Bad Request – Malformed payload or missing fields

• 401 Unauthorized – Missing or invalid token

• 422 Unprocessable Entity – Document failed validation checks

• 500 Internal Server Error – Unexpected failure (try again later)

Retry Strategy:

• Implement exponential backoff for temporary errors (5xx)

• Avoid retries on client errors (4xx), except for 422 with correctable input

• Maximum retry limit: 5 attempts per session