The system assigns an alias for each installation's standard print chain not defined on a given 1403 or 3211 printer. This alias provides JES2 with flexibility in scheduling printers for SYSOUT data sets. For example, a request for the 1403 TN train would be assigned the T11 train, if the data set prints on a 3211. Table 1 lists the assigned aliases, which follow the naming conventions currently used in SYS1.IMAGELIB.

The image and aliases are included in SYS1.IMAGELIB at system installation.

Some trains, such as SN and G11, do not have aliases because they have no equivalent train on another printer. An installation can assign an alias if it so chooses. (See MVS/DFP Linkage Editor and Loader for details about the ALIAS statement.) JES2 uses any aliases supplied. If no alias is available, you should use an installation-defined SYSOUT class or a printer routing code (specified by the DEST parameter) to assign the data set to the correct printer. JES2 notifies the operator when you direct it to print a data set on a printer for which the proper image does not exist, if you have not used a SYSOUT class or printer routing code. The operator can then print the data set with a valid train or redirect the data set to the proper printer by using the JES2 $E command.