Parameters
- startDate
- The starting date for orders to be checked for coupons
- endDate
- The ending date for orders to be checked for coupons
Return Value
An array of string with the codes of coupons used
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2