22D

Explanation
A program requested an overlay.  When trying to
answer the request, the overlay supervisor found an incorrect address
in the overlay segment table or the entry table.  The address points
to a location outside the boundaries of the virtual storage assigned
to the job step.
The overlay segment table is used by the overlay
supervisor; it resides in the load module and is in the same storage
protection key as the application program.
Note: Overlay programs
run only in 24-bit addressing mode, not in 31-bit addressing mode.

System action
The system abnormally ends the program that requested
the overlay.  The system writes an ABEND dump, if a dump DD statement
is provided.

Programmer response
Check the program for errors that caused
the overlay segment table or the entry table to be incorrectly modified.
 Correct the errors; then assemble, link edit, and run the program
again.

Source
Overlay supervisor