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One or more query parameters failed validation.
422 application/problem+json
Every PermitCore error is RFC 9457 application/problem+json. Branch on type (a stable URI), not on title or detail (human-readable, may change).

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When it occurs

A parameter had the wrong type, format, or an out-of-range value. The response body includes an errors array (FastAPI/Pydantic validation detail) pinpointing each offending field.

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How to fix

Read the errors array in the response, correct the offending parameter, and resubmit. Not retryable unchanged. Not retryable — fix the request before resubmitting; retrying unchanged returns the same error. See the full error catalog for the response shape and retry matrix. Every response carries an x-request-id header — include it in any support request.