Quick answer
Handlers expect specific fields (e.g.
Webhook Payload Missing Required Fields
Handlers expect specific fields (e.g. event type, id, timestamp). Missing or misspelled fields cause validation errors or silent failures.
Common causes
- Sender and receiver disagree on field names (e.g. event_type vs type).
- Required field not included in the payload.
- Nested object structure different from what the handler expects.
How to fix
- Document the expected payload schema and validate incoming payloads against it.
- Use a webhook payload validator to check structure and required fields.
- Align sender and receiver on field names and types (e.g. via OpenAPI or JSON Schema).
FAQ
- Should I validate webhook payloads?
- Yes. Validate JSON syntax and required fields; optionally verify signatures to prevent spoofing.
- What if the provider changes the payload?
- Version the webhook or use a flexible parser; log unknown fields and handle missing ones gracefully.
Fix it now
Try in validator (prefill this example)