For 3600, 3770 batch, 3770, and 3790 batch data interchange, and LUTYPE 4 logical units, you can specify the name of an LDC (logical device code) list. The list specifies which LDCs are valid for this logical unit and, optionally, which device characteristics are valid for each LDC. The first LDC in this list is the default when CICS® must choose a default LDC for a logical unit.
All the TERMINAL definitions for devices that reference a particular LDC list must name the same TYPETERM, because the LDCLIST attribute is on the TYPETERM definition.
The LDC list itself must be defined using a DFHTCT TYPE=LDCLIST macro. It may be a local LDC list or an extended local LDC list. There is an example of the coding for each in TYPETERM definition attributes, and further guidance in DFHTCT logical device codes: VTAM non-3270. You use the label coded on the macro instruction to identify the LDC list on the TYPETERM definition, specifying it in the LDCLIST attribute.