Meaning of Different status_code and phase_code [Used In Concurrent Programs]

Meaning of Different status_code and phase_code [Used In Concurrent Programs] in FND_CONCURRENT_REQUESTS table

STATUS_CODE:
A - Waiting
B - Resuming
C - Normal
D - Cancelled
E - Error
F - Scheduled
G - Warning
H - On Hold
I - Normal
M - No Manager
Q - Standby
R - Normal
S - Suspended
T - Terminating
U - Disabled
W - Paused
X - Terminated
Z - Waiting

PHASE_CODE:

C - Completed
I - Inactive
P - Pending
R - Running