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Parameter	Description
`advertiser_tracking_enabled` boolean	Required for app events Use this field to specify ATT permission on an iOS 14.5+ device. Set to `0` for disabled or `1` for enabled.
`application_tracking_enabled` boolean	Required for app events A person can choose to enable ad tracking on an app level. Your SDK should allow an app developer to put an opt-out setting into their app. Use this field to specify the person's choice. Use `0` for disabled, `1` for enabled. `
`extinfo` object Please use the down arrow to the right to see the list of `extinfo` values.	Required for app events Extended device information, such as screen width and height. This parameter is an array and values are separated by commas. When using `extinfo`, all values are required and must be in the order indexed below. If a value is missing, fill with an empty string as a placeholder. Note: `version` must be `a2` for Android `version` must be `i2` for iOS
`0` string	Required extinfo version Example: `i2`
`1` string	app package name Example: `com.facebook.sdk.samples.hellofacebook`
`2` string	short version (int or string) Example: `1.0`
`3` string	long version Example: `1.0 long`
`4` string	Required OS version Example: `13.4.1`
`5` string	device model name Example: `iPhone5,1`
`6` string	locale Example: `En_US`
`7` string	timezone abbreviation Example: `PDT`
`8` string	carrier Example: `AT&T`
`9` string	screen width Example: `320`
`10` string	screen height Example: `568`
`11` string	screen density Example: `2`
`12` string	CPU cores Example: `2`
`13` string	external storage size in GB Example: `13`
`14` string	free space on external storage in GB Example: `8`
`15` string	device timezone Example: `USA/New York`
`campaign_ids` string	Optional An encrypted string and non-user metadata appended to the outbound URL (for example, ad_destination_url) or deep link (for App Aggregated Event Manager) when a user clicked on a link from Facebook. Graph API definition: Parameter passed via the deep link for Mobile App Engagement campaigns.
`install_referrer` string	Optional Third party install referrer, currently available for Android only, see here for more.
`installer_package` string	Optional Used internally by the Android SDKs
`url_schemes` array	Optional Used internally by the iOS and Android SDKs.
`vendor_id` string	Optional Vendor ID.
`windows_attribution_id` string	Optional Attribution token used for Windows 10.