Nothing short of the direct intervention of a deity keeps the character from learning the exact location of a single individual or object. Discern location circumvents normal means of protection from scrying or location. The spell reveals the name of the location, community, county, country, continent, and plane where the subject lies.
To find a creature with the spell, the character must have seen the creature or have some item that once belonged to it. To find an object, the character must have touched the object at least once.