6027-1005 Common is not sole item on [] line `number`.

Explanation
A [nodelist] line in the
input stream contains common plus any other names.

User response
Fix the format of the [nodelist] line
in the mmfs.cfg input file. This is usually
the NodeFile specified on the mmchconfig command.
 If no user-specified  [nodelist] lines
are in error, contact the IBM® Support Center.
 If
user-specified [nodelist] lines are in error,
correct these lines.