[N]いち　location

[IV]（placeに）位置する　to get located in/situated in

This is used to indicate the location of somewhere and in the form of ている in order to express the current condition of the place. However, ある is mostly used to indicate the same thing in casual situations. While 位置している focuses more on “the location”, ある focuses more on “the existence”.

例　りんごは　机つくえの上うえに　あります。　appropriate

　　There is an apple on the table.

　　りんごは　机つくえの上うえに　位置いちしています。　unappropriate

　　An apple is located on the table.