A uniquie identifier for the add-in, usually a GUID.
Namespace: http://schemas.esri.com/Desktop/AddInsSchema: DesktopAddIns_ElementOnly.xsd
Content Type
string
Parents
ESRI.Configuration
Syntax
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<xs:element minOccurs="1" name="AddInID" type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema"></xs:element>