Common Errors

This page lists common failure modes and the pinned sources for debugging.

API error codes (history / replay)

Canonical taxonomy (exact codes):

• docs/contracts/v1/webhooks/rc81/error_taxonomy_v1_3.md

Pinned mappings:

• docs/contracts/v1/rc100/fixtures/error_mapping_examples.json

Signature + envelope verification reasons (SDK)

These are not API error responses; they are verification outcomes used by fixtures and SDK helpers:

• Signature verification: docs/contracts/v1/rc96/webhook_signature_verification.md
• Fixtures: docs/contracts/v1/rc96/fixtures/

Common fixture references:

• docs/contracts/v1/rc96/fixtures/expired_timestamp.json
• docs/contracts/v1/rc96/fixtures/altered_payload.json