# MergeMapUpdate

Source: https://www.nianticspatial.com/docs/api/unity/NianticSpatial.NSDK.AR.Mapping.DeviceMapAccessController.MergeMapUpdate/

MergeMapUpdate
Merge a map update into an existing map.

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## Declaration

public bool MergeMapUpdate(byte[] existingMapData, byte[] mapUpdateData, out byte[] mergedMapData)

#### Summary

Merge a map update into an existing map.

#### Returns

True if successful, false otherwise.

> **Info:**
>
> **Notice**
>
> This is an experimental feature, and is subject to breaking changes or deprecation without notice

### Parameters

| Name | Type | Summary |
| --- | --- | --- |
| existingMapData | byte[] | The existing map to merge the update into. |
| mapUpdateData | byte[] | The map update to merge into the existing map. |
| mergedMapData | byte[] | The merged map will be written here. |

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