The
AWQL support custom dateRange with min and max in YYYYMMDD format for a DURING clause. Either we have to use custom date range min and max in YYYYMMDD format(e.g. DURING 20140101, 20150720)
or use a
DateRange type (e.g DURING YESTERDAY or DURING LAST_MONTH). Above-mentioned date range 01/01/2014 through Yesterday, you need to specify the custom dateRange min and max date(e.g. DURING 20140101, 20150720) and DURING 20140101, YESTERDAY is not supported.
Umesh, AdWords API Team.