# PermitWarningCode

> **PermitWarningCode** = `"valid_until_before_valid_from"` \| `"supersedes_unresolved"` \| `"supersedes_cycle"` \| `"overlapping_validity"` \| `"daily_operating_time_normalized"` \| `"monthly_above_max"` \| `"duplicate_month"` \| `"duplicate_volume_period"` \| `"duplicate_condition_id"` \| `"condition_due_conflict"` \| `"invalid_duration"` \| `"missing_identifier"` \| `"granted_without_identifier"` \| `"duplicate_history_id"` \| `"duplicate_fulfillment_id"` \| `"unmatched_fulfillment"` \| `"missing_timezone"`