Hi Naveen,
To achieve that you have to create a custom attribute for lock for each system, for example if you have SAP, GOOGLE, AD.... you will have attribute : CUSTOM_SAP_LOCK, CUSTOM_AD_LOCK and so on, after you have created the needed attributes you can set them as event triggers into the SYSTEM-privileges. Then you can add some modifications into the standard provisinong, but it will work.
BR,
Simona