Use Stack Size (-s) to change the size of the stack (an internal memory area used by ABL program modules).

Operating system and syntax UNIX / Windows -s n
Use with Maximum value Minimum value Single-user default Multi-user default
Client Session    5,242,8781 9 128 128
n
The size of the stack in 1KB units.
Note: The default is value 128, and Progress recommends against setting it to a lower value. Setting this startup parameter to a value less than 128 may result in runtime errors in some environments.

Increase the stack size if one of the following messages appears: 

SYSTEM ERROR: stkpush: stack overflow. Increase -s parameter.
SYSTEM ERROR: stkditem: stack overflow. Increase -s parameter.

Stack overflow errors are most likely when data definitions are loaded for very large tables or use recursive procedures.

Note: If your application passes array parameters to procedures or functions, your stack size requirements can increase significantly.
1 Actual maximum value is limited only by available memory