The customer plans to buy a new E870, as the primary server has been installed 740, customers will migrate
IBMi 740 partitions, operating system license and software to E870, they need 740 into a CBU. When trying to
register 740 as a CBU backup machine, be refused registration.
What might cause the registration to be rejected?

A.
CBU total CPW rating system must be at least as high as the main system.

B.
the software level is not the same on both systems.

C.
CBU function only when purchasing a new server or by model/type upgrade.

D.
the main system to IBMi kernel total amount is higher.