59000: Validation Error

The request body failed validation. This is returned by all write endpoints (POST/PATCH) in the Webhooks Configuration API when a required field is missing, a field has an invalid type or enum value, or a field violates a length or format constraint.

• A required field is missing (for example, auth.source when creating a Setting, or type when creating a SharedKey).
• A field's value isn't one of the allowed enum values (for example, an auth.source other than INLINE or REFERENCE).
• A string field exceeds its maximum length (for example, friendlyName or description over 255 characters).
• The settings percentages on a Rule don't sum to 100.
• A Rule's match pattern uses special characters, which are not supported.

• Read the detail field of the error response — it names the specific field and constraint that failed.
• Check the request body against the Webhooks Configuration API reference for required fields, types, and allowed values before submitting.
• For Rule traffic-splitting requests, verify all settings[].percentage values sum to exactly 100.
• If you need prefix filtering, use a prefix match instead of special characters.