What are the three levels that copy controls are set up? And what are the transaction codes through which it could be done?

SAP Sales and Distribution (SD) - Interview Questions

At three levels of sales order copy controls are set up Header level, Item level and Schedule line level.

VTAA : from sales order to sales order

VTLA : from sales order to delivery

VTAF : from the billing document to sales order

VTFA : from sales order to billing document

VTFL : from delivery to billing document

VTFF : from the billing document to billing document