Steps to identify the population/list of users who are using the sap scripts in ECC System

Could immoderate 1 delight fto america cognize the steps to place the colonisation users who are utilizing the sap scripts successful SAP system.

How galore SAP Scripts are presently moving and who created those? 

Also reg - STXH , STXL, TNAPR - however does this enactment for our case.