SAP Transaction Data

SAP Transaction MN05

Can this transaction be set to only allow the sending of for example a purchase order via email - Once only at the point of creation Currently I can get it to work but it generates a new message whenever an order in this example purchase order is changed.     Software/Hardware used: SAP

How to identify frequently used ABAP queries?

Hi I'm wokring on a project where I need to identify frequently used abap queries and analyse their performance. Could anyone give me some hints please...Are there any transactions that could provide me this kind of information.. Thank you in advance

Transaction Use Information

Is there a way to find out, when a Transaction has been used for the last time ? And: Is there a way to find out, when a ABAP-program has been used for the last time ? - thanks

SAP master data

Can any one explane me the exact diffference of master data and transactional data.