Change Document in SOLAR01

Hi,

Whenever I change a document in SOLAR01, I would want to see the change time and the user changed in the SA01PHI0 table.

But, unfortunately, the fields chng_user and chng_time always shows the time the user had first created it.

I am building a program to retrieve all these lists.

Let me know if I need to look in any other table or is there any other way to retrieve it.

Regards

Krish