Flat files, sequential data sets, ESDSs, and tape data sets only. Defines whether the file name for the session represents a data file or a file list file.
N = The file name for the session represents the name of the file from which source data is to be extracted.
Y = The file name for the session does not contain data. Instead, the file name represents a
filelist file
that specifies the names of the files from which source data is to be extracted. The PowerExchange Listener extracts data from all of the files named in the filelist file in the order in which the files are listed.