When using Azure Active Directory groups containing an ampersand (&) in the name, a SmartObject filter error occurs when executing the Get List method. This is due to the way in which the .net URI object encodes query strings. To allow the successful execution of the Get List method, edit the Hostserver.exe.config file. Add the setting to turn on the IRI.
URI = Uniform Resource Identifier
IRI = International Resource Identifier
Use these links as reference for more information on URI and IRI settings:
Turn on the IRI by following these steps:
<idn enabled="All" />
<iriParsing enabled="true" />