preparation M n6 M n6 YYMMDD (YY- Year, MM - Month, DD- Day) 0019 Time of preparation M n4 M n4 HHMM (HH - Hour, MM - Minute) 0020 Interchange control reference M an..14 M an..14 Unique ID of an interchange. S005 [...] period value C an..35 R n12 Format: CCYYMMDDHHMM (CC- Century, YY- Year, MM - Month, DD- Day, HH- Hour, MM - Minute) estimate arrival date, time of DESADV estimate arrival date, time 2379 Date or time