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 # search\_zonelets\_by\_invalid\_normals

 Last update: 29.04.2026 

<a id="ansys.meshing.prime.SurfaceSearch.search_zonelets_by_invalid_normals"></a>

#### SurfaceSearch.search\_zonelets\_by\_invalid\_normals(part\_id, face\_zonelets, register\_id)

Search face zonelets to identify faces with invalid normals.

Search face zonelets to identify faces with invalid normals.

**Parameters:**

**part\_id**

Id of part.

**face\_zonelets**

Ids of face zonelets.

**register\_id**

Id of register.

**Returns:**

**[`SearchByInvalidNormalsResults`](ansys.meshing.prime.SearchByInvalidNormalsResults.md#ansys.meshing.prime.SearchByInvalidNormalsResults)**

Returns the SearchByInvalidNormalsResults.

**Return type:**

[`SearchByInvalidNormalsResults`](ansys.meshing.prime.SearchByInvalidNormalsResults.md#ansys.meshing.prime.SearchByInvalidNormalsResults)

### Examples

```pycon
>>> surf_search = SurfaceSearch(model=model)
>>> results = surf_search.search_zonelets_by_invalid_normals(part_id, face_zonelets, register_id)

```