You map data sets using the CICS® VT ISPF dialogs. The ISPF dialogs are invoked by the VID.SVIDEXEC member VIDSTART. The first time you start the mapping application, you need to define a number of default mapping values. You do this by selecting option D from the CICS VT main menu screen.
----------------------------- CICS VT: Main menu ----------------------------
Select Option ===> D_______________________________________________________
1 - Auto mapping facility
2 - Manual mapping facility
3 - Generate migration jobs for DIM : ________ (Full name only)
D - Defaults
Press: Enter to continue PF3 to exit PF1 for Help