FusionCompute failed to add IP-SAN storage resources. What is the possible reason? (Multiple choice)

FusionCompute failed to add IP-SAN storage resources. What is the possible reason? (Multiple choice)
A . The mapping relationship is not configured on the IP-SAN device
B . CHAP authentication failed
C . Storage IP and port are filled incorrectly
D . The storage device license is not loaded

Answer: ABCD