The location or whereabouts of a person or thing; used to ask or report where something/someone is (e.g., 'whereabouts unknown').
彼の現在の所在は確認できていない。
His current whereabouts cannot be confirmed.
書類の所在を社内で調べてもらった。
I had someone in the company check the location of the documents.
所在を明らかにするために連絡を取った。
I contacted them to clarify their whereabouts.