The source code (written in assembler language) that is similar to the IBM-provided IFG0199I exit routine is in member OPENEXIT of SYS1.SAMPLIB. You can modify it to handle other data management abend situations and replace the IBM-provided IFG0199I module in SYS1.LPALIB with the modified routine. If you replace the IBM-provided IFG0199I, the replacement module you supply must have the entry point name IFG0199I.

For additional information, see Replacing an Existing Exit.