Invocation of Customization Dialog Exits

The user exits are part of the SA z/OS product. Therefore they are supplied in the same data set as all other ISPF REXX modules (part of SINGTREX). All of the supplied samples just perform a 'RETURN' with return code RC=0.

You have two possibilities to apply your user modifications:

  1. Edit the user exit (or exits) in the supplied library. Your changes do not have any consequences for the code of the SA z/OS product. These exits are not serviced (via PTF) by IBM® because they do not include any code at the time of product delivery.
  2. Supply the modified user exit in a private data set. Then you have to concatenate your private data set to your SYSEXEC library chain. As INGDLG supports multiple data set names specified for ddname SYSEXEC, this can be done in the following way: 
     INGDLG SELECT(ADMIN) ALLOCATE(YES) HLQ(SYS1)
        SYSEXEC(usr.private.dsn SYS1.SINGTREX)

    This example assumes that the high level qualifier of the data sets where the IBM supplied parts exist is SYS1.

    If you specify the SYSEXEC parameter in the INGDLG call, you need to specify the IBM supplied library explicitly with its fully qualified data set name.