T.Code last used details- OKP1

Hi All,

How to find the user details who has done some changes to a SAP transaction after executing that t.code. If a t.code has been used and some date has been changed by some user, how can we find out who has done that changes and when?

I dnt have access to ST03N.

Some one had done some changes in OKP1, I want to know who has unlocked and locked version plan in OKP1.

Regards,

Roshan.