IGW023A

Explanation
The system detected that this HFS has exceeded
the user-specified full threshold.
In the message text: dsname
The name of the HFS data set that exceeded its full threshold.
percentage
The percentage of space in the HFS file system that is used.

System action
The system reports space usage for this HFS file
system and continues.

Operator response
Contact the system programmer.

System programmer response
Add space to the HFS with CONFIGHFS
or by reallocating the HFS.

Source
HFS Mount and space allocation