CASCL0011S Auto-install error, NETNAME netname TCTUA allocation failure

During the auto-install process the tcts selected requested a shared storage TCTUA. There was a failure when attempting to allocate it.
Restriction: This topic applies only when the Enterprise Server feature is enabled.
System Action:
The auto-install is rejected.
Resolution:
Make sure that enough shared pages are defined.
Module:
dfhzai
Destination:
TDQ CAIL and Transaction System client