Use to specify the logical unit (LU) name of the remote end; LU000000, for example.
Rules:
The maximum length is 8 characters.
Each character must be a non-blank printable character; ,;.= (comma, semicolon, period, or equal sign) are not allowed.
The first character must be one of $@# or an alphanumeric; if it is numeric, the name must not be a hexadecimal number.
The LU name also must be configured in VTAM, which may further restrict the set of valid names.