# name (tiledrain.str)

The name of the tile drain record is a primary key referenced by [tile](https://swatplus.gitbook.io/io-docs/introduction-1/landuse-and-management/landuse.lum/tile) in [**landuse.lum**](https://swatplus.gitbook.io/io-docs/introduction-1/landuse-and-management/landuse.lum). All names in the **tiledrain.str** file must be unique.&#x20;