What's a lookup tag used for?

A tag is an additional label attached to the lookup. Tags are user-defined and can be grouped depending on the user's requirement to make search convenient and effective.

The same tag may be used across lookup categories. In such cases, tags are used as a refined search criterion to filter information across several groups and get the search results.
Note: Lookup tags are optional descriptions of attribute values. These descriptions aren’t validated. In some product-specific implementations, tags are used for specific purposes. For more information, see product-specific documentation.