SNA Server now provides full support for APPC applications, such as the MDI Data gateway. MDI Data gateway relies on the availability of auto-started APPC conversations on LU to LU pairs. Such applications typically use the Allocate qualifier AP_IMMEDIATE (which is described in the APPC Programmer’s Guide, available online with the SNA Server product) to open a conversation only if one of the auto-activated conversations is available for use. These applications will not cause an additional conversation to be allocated.