Error Recovery

Authentication Errors:
  Partner ──Any request (missing/invalid key)──> API
         <── 401 Unauthorized { "detail": "Invalid API key" }
  Action: Verify key, check expiration, re-onboard if needed

Validation Errors:
  Partner ──POST /v1/onboard (invalid body)──> API
         <── 422 { "errors": { "name": ["required"] } }
  Action: Fix request payload per error details

Processing Failures:
  Partner ──GET /v1/documents/{id}/status──> API
         <── 200 OK { "status": "Failed", "errorMessage": "..." }
  Action: Check error, fix document, re-submit

Attempt 1: Immediate
Attempt 2: Wait 1s
Attempt 3: Wait 5s
Attempt 4: Wait 30s
Max retries: 4