The parameter area is mapped by the IHASDEXI mapping macro. For IHASDEXI, see z/OS MVS Data Areas in the z/OS Internet library. Information that the area provides to the IEASDUMP.GLOBAL or IEASDUMP.LOCAL exit includes the problem description provided through the PROBDESC parameter and the incident token for the related dumps. The area gives the address and length of the data buffer the exit should use.