IIUB031E UNABLE TO LOAD PSB=`psbname`

Explanation
 The generic PSB psbname was
not found in any of the IMS data
sets.

System action
 Processing stops.

User response
 Ensure that all the dynamic PSBs (IIUPSB01, IIUPSB04,
IIUPSB16, and IIUPSB64) exist in the IMS concatenation.
In particular check that the Index Builder LOADLIB data set is the
first library in this concatenation.