| lookup black domain OUTPUT subcategory keyword

[saikhan]

Could you please explain me what is black? Is it Variable?

[renjith_nair]

@saikhan,

Try to add some context to the questions for others to understand easily 🙂

If the snippet is from a search you are using "black" could be a lookup table name

Reference : https://docs.splunk.com/Documentation/Splunk/8.0.4/SearchReference/Lookup