$3\mathrm{.}1$ What is the business process performed using transaction code VA$03?$

$3\mathrm{.}2$ What is the business process performed using the menu path:

Logistics $-$ Sales and Distribution $-$ Master Data $-$ Business Partner

Customer Display darr Complete?

$3\mathrm{.}3$ Which transactional processes are performed using the following transaction codes?

XK$03$:

MM$02$: $$

ME$23$N: $$