Rejection details are the per-application rejection records — one row per rejected application, capturing who rejected it, when, why (the rejection reason), the linked rejection note, and any answers to the organization's rejection question custom fields. A rejection detail exists only after an application has been rejected; non-rejected applications are not represented here. Filter with application_ids to pull rejection details for specific applications, or with rejection_reason_ids to slice by reason (useful for auto-rejection workflow reporting, e.g. spam or time-bound rejections). To patch a rejection's reason or custom field answers, fetch the rejection detail id from this endpoint and pass it to PATCH /v3/rejection_details/{id} — the path id is the rejection detail id, not the application id.