A. You can check whether all customer-related prerequisites for a repair process have been fulfilled like the existence of a (repair) contract.

B. You can decide for each repair object whether it needs repairing or should be sent back to the customer.

C. Before starting the actual repair process, you can check whether enough capacity is available to start the repair process.

D. Before starting the actual repair process, you can perform a predefined set of preliminary work steps like disassembly.