Under OS/VS COBOL and VS COBOL II, you can use a CALL to ILBOABN0 to force an immediate abend and obtain a system dump. Under Language Environment, a CALL to ILBOABN0 will continue to force an immediate abend. To produce a system dump, see Obtaining a system dump or a CICS transaction dump.
If you use the Language Environment version of ILBOABN0, the save area of the program issuing ILBOABN0 is located two levels back from the save area where the actual abend was issued.
Programs converted to Enterprise COBOL that use a CALL to ILBOABN0 can continue to CALL ILBOABN0. However, it is recommended that you use the Language Environment CEE3ABD callable service instead.