To access Stock Ageing go to:

Stock > Stock Ageing under Stock Reports

Stock Ageing is a term for goods that haven't sold quickly or haven't sold for their full retail price.

Stock Ageing Reports lists out items batch wise, that have already expired or may expire in the near future. This information will help you keep track of the age of stock and also quick moving inventory, as older stock may depreciate in value or become obsolete, and result in a loss.