You can do this by Jouirnalling the File
CRTRCVJRN – Give it any name you want and usually best to put in th the same library as the objects you will journal. This is done for recovery process if ever needed.
CRTJRN – Same as above
STRJRNP – I usually omit the open/close and journal both the before and after images.
This will automatically log every add/update/delete to the file with the data and additional information such as who, what, when, where.
This can be done at anytime.
If you decide to end the process at some time, you do an ENDJRNPF command
Here is a link to information regarding an easy way to display the information once collected.
It is from a response question yesterday.