# mergeUpdate

Source: https://www.nianticspatial.com/docs/api/kotlin/com.nianticspatial.nsdk.mapping.MappingStorageSession.mergeUpdate/

mergeUpdate

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## Declaration

fun mergeUpdate(existingMap: ByteArray, mapUpdate: ByteArray): ByteArray?

#### Summary

Merge a map update into an existing map.

Combines incremental map updates with existing map data to create an updated complete
map dataset.

#### Returns

The merged map data if successful, or null if no merged map data exists.

#### Throws

ArdkNullArgumentStatusException -- or ArdkInvalidArgumentStatusException indicating a problem with the map argument. Check ARDK's C logs for more information.

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