invalid_request

One or more query parameters are invalid.

What it means: A known parameter carried a value outside its contract: a malformed date, a limit above the tier's cap, an unknown chamber, a badly formed identifier.
What to do: The detail field names each offending parameter and what it expected. Fix and resend.
Retry: Fix the request; do not retry as sent.
Who changes what: The caller. The request as sent cannot be answered; the detail field says why.
On the wire: Content-Type: application/problem+json
{"type":"https://www.veridionmarkets.com/data-api/problems/invalid_request","code":"invalid_request","status":400,…,"request_id":"…"}

Documented for version 1.3.5. The request_id in the body equals the X-Request-ID header; quote it to support@veridionmarkets.com. All problems · API page