tagKey property
The tag key that failed validation.
This field identifies which specific tag field caused the validation failure, allowing applications to provide targeted error handling and user feedback. The tag key corresponds to the unified tag model field that was being validated.
Examples:
- TagKey.title for title length violations
- TagKey.rating for rating range violations
- TagKey.dateRecorded for invalid date format
- TagKey.trackNumber for non-positive track numbers
Implementation
final TagKey tagKey;