EMA C++ Configuration Guide : 3 Configuration Groups : 3.10 Directory Group : 3.10.2 Setting Default Directory
 
3.10.2 Setting Default Directory
If you do not specify a DefaultDirectory, then the Enterprise Message API uses the first Directory component in the DirectoryGroup. However, you can specify a default directory by including the following parameter on a unique line inside DirectoryGroup but outside DirectoryList.
 
 
<DefaultDirectory value="VALUE"/>