AIX 7.1 is not supported at this point.
According to the Release Notes, Spotlight on Unix 9.0 supports the following:
•Sun Solaris 9, 10, 11
•HP-UX 11i, 11i v2, 11i v3
•IBM AIX 5.2, 5.3, 6.1
•Red Hat and SUSE operating systems running Linux 2.4 and 2.6 kernels