The installation-wide exit interface is a system programmer interface and, as such, no special error protection is provided for the exit routines. The ESTAE and ESTAI exit routines ISPF uses for abend recovery are used to recover from errors in the code for the user exit.

Abends within exit routines at any other user exit do not terminate ISPF, but do result in a logical screen restart, unless running in test mode or with ENBLDUMP on.