The default value is 5000. Value cannot exceed 10000.
Note that if the BufferSize limit is reached first, the data are sent to Salesforce before the BatchSize limit is reached.
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