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# ARPlaneClassificationStatusUnknown

ARKit has completed its classification process for the plane anchor, but the result is inconclusive.

```
ARPlaneClassificationStatusUnknown
```

## Discussion

ARKit attempts to classify detected planes using a finite set of common categories. However, a detected plane may not be a real object fitting any of those categories, or the plane classification process may not be able to recognize it. In such cases, the plane anchor’s [`classification`](/documentation/ARKit/ARPlaneAnchor/classification-2hi2p) is [`ARPlaneClassificationNone`](/documentation/ARKit/ARPlaneClassification/ARPlaneClassificationNone) and its [`classificationStatus`](/documentation/ARKit/ARPlaneAnchor/classificationStatus) is [`ARPlaneClassificationStatusUnknown`](/documentation/ARKit/ARPlaneClassificationStatus/ARPlaneClassificationStatusUnknown).

---

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