This article describes how to modify the USAddress.lot.xml file to find addresses that contain ampersands in the street name. This method uses an address locator that was created using one of the US Address address locator styles (US Address—Dual Ranges, US Address—One Range, US Address—Single House, US Address—Street Name).
Make a copy of the USAddress.lot.xml prior to modifying the file.
Make sure to have write permissions to the Locators folder where the address locator templates are stored.
Notepad++ is an example of a text editor that can be used to modify the XML file.
C:\Program Files (x86)\ArcGIS\Desktop10.x\Locators
Substitute '10.x' in the address above to match the version of ArcMap in use.