Identify who deleted a petition o an infocube

Hi gurus. I've been facing a problem has happened before, which have been deleted request from an InfoCube. I would like to detect what user has deleted from it. I know there is a table in SAP BW which is hosted this information, but I've forgotten the name of the table (which for example can access through the InfoCube name and show me the result of the query). Any helpfull anwers will be appreciated. Thanks in advance. Ignacio