An asterisk * in the title indicates the field is mandatory.
If a field has a default value, it is shown in the Description column.
If the field type is an array, the Field Name has a .[n] suffix, where n is the array index placeholder.
Object and array field names are listed to provide context. If a field belongs to an object or an array, the full field name is shown in dot separated notation.

Title	Description	Details
ExternalSipClientAccessPort	Port used for eternal client access.	Field Name: ExternalSipClientAccessPort Type: Integer
WebLinks	Collection of Autodiscover URLs. These URLs must be created by using the New-CsWebLink cmdlet.	Field Name: WebLinks Type: String
ScopeClass		Field Name: ScopeClass Type: String
Element		Field Name: Element Type: String
InMemory	Creates an object reference without actually committing the object as a permanent change. If you assign the output of a command called with this parameter to a variable, you can make changes to the properties of the object reference and then commit those changes by calling the Set-CsAutoDiscoverConfiguration cmdlet.	Field Name: InMemory Type: Boolean
ExternalSipClientAccessFqdn	Fully qualified domain name of the server used for external client access.	Field Name: ExternalSipClientAccessFqdn Type: String
EnableCertificateProvisioningServiceUrl	When set to True (the default value), the Certificate Provisioning Service URL is included in Autodiscover Service responses.	Field Name: EnableCertificateProvisioningServiceUrl Type: Boolean
Anchor		Field Name: Anchor Type: String
Identity *	Unique identifier for the collection of Autodiscover configuration settings to be modified. To create a collection configured at the site scope, use syntax similar to this: -Identity "site:Redmond"	Field Name: Identity Type: String

Model: device/skypeforbusiness/CsAutodiscoverConfiguration