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Establish ISPF Library Concatenation

The proper ISPF environment must be established before the IT can be used. The IT libraries can be allocated using a logon CLIST, a logon proc, or the ISPF LIBDEF facility. In all cases, if the logon is used primarily for the IT, the IT libraries should be first in the concatenation.

Important! Do not include CA Gen data sets from releases before CA Gen 8.5 in the ISPF logon concatenation because it may produce unpredictable results or cause errors.