000220: Cannot execute Export CAD...Cannot overwrite output.


The output CAD file already exists, and the overwrite option in ArcGIS is set to not allow overwrites.


Check if the geoprocessing overwrite output setting is set to True. To change this setting, click the Geoprocessing menu on the Standard toolbar and select Geoprocessing Options. On the resulting dialog box, check the option to Overwrite the output of geoprocessing operations.