If an installation exit abnormally ends, you can force DFSMShsm to generate a dump. Setting the MCVTFDMP flag to on prevents DFSMShsm from continuing its normal ESTAE recovery process and instead causes a dump. To set the MCVTFDMP flag to on, enter the PATCH command as follows:

PATCH .MCVT.+2D BITS(.......1) /* dump after installation exit */
                               /* abnormally ends                   */