If you expect to need multiple configuration files for different DITA2Map projects, you can collect settings that are common to all projects in a configuration template; see §39.2 Referencing configuration files and templates.
To specify a configuration template:
[Templates] ; Configs = path to .ini file Configs=D:\path\to\template.ini
DITA2Map checks the template file for any settings missing from dita2map.ini.