SKAN raw data reports

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At a glance: SKAN raw data reports contain row-level data generated after translating and decoding postbacks received by AppsFlyer from iOS, as well as raw SKAN postbacks. Data is available via Data Locker and Push API. If your subscription plan includes raw data, there is no need for a Data Locker subscription. 

Related reading: SKAN reports available

SKAN raw data reports

Principles: 

  • Data is provided by:
    • Data Locker
      • Note! Available to accounts having a raw data subscription. Meaning, there is no need for a Data Locker subscription. If you aren't currently using Data Locker, an admin user must configure Data Locker and enable the SKAN reports. To do so, go to Integration > Data Locker. Select the SKAN reports. 
      • Data freshness rate: Daily. Data is contained in the h=23 folder of the date the postback is received by AppsFlyer. Example: If the postback was received on Monday, it is processed after the end of the day. Processing is completed, by 12:00 UTC Tuesday, the data is written to the Monday h=23 folder. 
    • Push API
  • Install date: Is derived from the postback arrival time by AppsFlyer as follows:
    • If the postbacks are SKAN V4, the install date formula is: Install date = postback arrival time - [accumulated window length] - [average postback delay].
      • Postback 1: install date = postback arrival time - 48h - 36h
      • Postback 2: install date = postback arrival time - 168h - 84h
      • Postback 3: install date = postback arrival time - 840h - 84h
    • If the postbacks are SKAN V3, the install date formula is: Install date = postback arrival time - 36 hours - [average last-active range]. 
      • The default [average last-active range] is 12 hours.
      • For a conversion value of 0, the average last-active range is set to 0.
    • Google estimates the install time on its own and AppsFlyer uses that install time. Note: It can take up to 13 days for Google to report installs. Learn more

Report types available are:

  • Device postback: 1 device postback per install or redownload received from the iOS device.
  • SKAN raw data:
    • AppsFlyer decodes and translates the device postback into raw data records.
    • Each postback generates an install or redownload record and in-app event records.
    • The number of in-app event records depends on the conversion value (CV) as follows:
      • CV = 0, blank, or null: No in-app records are generated. 
      • CV range:
        • 1-63: For SKAN 3, and SKAN 4 window 1 fine value, this is the number of in-app records, depending on your measurement settings.
        • Low, medium, or high: For SKAN 4 coarse values, this is the number of in-app records, depending on your measurement settings.

Why are some fields empty? This occurs for any of the following reasons:

  • Non-mandatory enrichment fields like campaign_name, ad_network_campaign_id, ip that the ad network did not provide.
  • Apple withheld the data due to Apple threshold policies. Fields like source_app_id, skad_campaign_id, skad_conversion_value. 

SKAN raw data report format and content

Raw data report types

Report type Report name Description
Postback Postbacks

Postbacks sent by iOS to the ad network. The postback, after enrichment by the ad network, is forwarded to AppsFlyer. Download postbacks example (CSV).

Note: Postbacks aren't included when did_win=false.

Topic name in Data Locker: skad_postbacks
Postback Postbacks copy (direct from Apple)

Postbacks sent directly by iOS to AppsFlyer.

Available starting iOS 15+ and requires the advertiser to configure the app to send the winning postback to AppsFlyer. Download postbacks copy example (CSV).

Note: This topic contains only winning postbacks. 

Topic name in Data Locker: skad_postbacks_copy
Decoded event Installs

First-time app installs

SKAN reported redownload=false. Meaning, this is the first time the user, represented by the Apple ID, downloaded the app.
Download installs example (CSV).

Topic name in Data Locker: skad_installs
Decoded event Redownloads

App installs that are not first-time installs

SKAN reported redownload=true. Meaning, this is not the first time the user, represented by the Apple ID, downloaded the app. This report has the same structure as installs.

Topic name in Data Locker: skad_redownloads
Decoded event In-app events

In-app events

Starting July 21, 2021, there are changes to how we provide in-app event raw data as detailed in the tables. 

The number of in-app event records depends on your measurement settings. 

Download in-app events example (CSV).

Topic name in Data Locker: skad_inapps

Valid for iOS postbacks received starting July 21, 2021:

Measurement type Description
Revenue
  • Revenue of a given user. If revenue > 0, a record containing the skad_revenue and event_name fields.
  • The fields min_revenue and max_revenue are populated with your custom conversion range values.  
In-app conversion and funnel events
  • A record for each unique conversion event performed. The event_name field is populated accordingly. If no events are performed, there is no record.
  • Conversion events have min_event_counter = 0 and max_event_counter = 1. 
In-app engagement  To determine the number of times a user performed a given in-app event use the formula[round up (min_event_counter + max_event_counter) / 2]

Valid for iOS postbacks received until July 20, 2021:

Measurement type Number of records Description
Revenue 0-1 If revenue > 0, a record containing the skad_revenue and event_name fields.
Conversion 

0-6

 A record for each unique conversion event performed. The event_name field is populated accordingly. If no events are performed, there is no record.
Engagement

0-63

 The number of records represents the number of times the user performed the engagement event. If the user does not engage, there are no engagement records.
Custom 0-unlimited According to your custom conversion schema. 
Decoded event SRN advertising dimensions 
  • Report contains Meta ads events with campaign, adset, and ad granularity. Each row in the report can be either an install or in-app event.
  • Adset and ad granularity isn't included in SKAN postbacks from Meta ads. This data is unique to this report, and doesn't display in the SKAN dashboard, Performance API, and other SKAN Data Locker reports.
  • Report is schemaless. Data Locker field selection options don’t apply.
  • Best practice: Don't combine or compare data from this report with other SKAN reports, as there may be discrepancies between this report, which uses data decoded by the SRN, and other reports, which use data decoded by AppsFlyer. These discrepancies can be due to time zone differences, SRN schema differences, or incorrectly mapped in-app events-to-CV in the SRN integration.
  • Download SRN advertising dimensions example (CSV).

Topic name in Data Locker: skad_srn_advertising_dimensions

Raw data field format types

Field formats

Format name Description
String [n]

The maximum length of the string. We don't usually enforce field length limitations on receipt of the data, but data may be truncated thereafter.
Time string

String having the format, yyyy-mm-dd hh:mm:ss. For example, 2019-09-17 00:09:25 
Enum [n] Enum fields can only contain specific values. For example, Cost currency has 3 characters and can contain only currency codes as specified.
Timestamp

10-digit UNIX timestamp. Example:

August 4, 2020, 07:25 UTC translates to "timestamp": "1596525944"
Boolean

The value of the field can be either TRUE or FALSE
Integer

Integer
Float

Real floating number that can have a decimal point and values after the decimal point.

Fields available in postback and postback copy reports

Field name Source or iOS SKAN starting version Description Format Available in postbacks copy 

ad_network_campaign_id

 Ad network Campaign ID reported by the ad network to AppsFlyer String No

ad_network_campaign

_name

 Ad network

Campaign name reported by the ad network to AppsFlyer.

 

 String No

ad_network_timestamp

 Ad network

Time the ad network received the postback.

In the case of Google Ads, the time is derived from the last-click time reported by Google.

 Timestamp No

app_id

 AppsFlyer App ID (advertiser app) with prefix ID. String Yes

city

 AppsFlyer Starting August 30, 2021, always null  String No

country_code

 Ad network   String No
dma   Starting August 30, 2021, always null  String No

postal_code

   Starting August 30, 2021, always null   String No

region

 AppsFlyer According to the country_code reported String No

skad_ad_network_id

 1.0 

Some SRNs don't share their ID, and the field is left blank. For example, Twitter. 

 String

Yes 

skad_attribution_signature

 1.0   String Yes
skad_campaign_id 1.0 Campaign ID used to publish the ad. Range 0-100 String Yes
skad_conversion_value 2.0 

Conversion value reported by iOS. Range 0-63.

If null, iOS didn't populate the field** 

 Integer Yes
skad_redownload 2.0 If true, app was redownloaded

Boolean

Yes
skad_source_app_id 2.0

Site ID. The app publishing the ad. This field is identical to source_app_id.

Field population depends on privacy thresholds**

 String Yes
skad_transaction_id 1.0   String Yes
skad_version 2.0   String Yes
timestamp Ad network

Time that AppsFlyer received the SKAN postback. 

 Timestring Yes
ad_network_name Ad network

Ad network name reported by the ad network to AppsFlyer. 

  • If this field is blank, the ad network didn't (couldn't) populate it.
  • You can resolve the ad network name using skad_ad_network_id. Use this table to do so. 
 String No
ip  

IP address in the HTTP message of the iOS device sending the postback.

This field is populated if the ad network provides us with the address.

Note! The SDK isn't involved in getting the address.

 String No

skad_app_id

 1.0   String No

source_app_id

 AppsFlyer Site ID. The app publishing the ad. This field is identical to skad_source_app_id String No

ad_network_adset_id

 Ad network   String No

ad_network_adset_name

 Ad network   String No

ad_network_ad_name

 Ad network   String No

ad_network_ad_id

 Ad network   String No

did_win

 3.0 (iOS 14.6)

Used to distinguish between campaigns contributing or attributed with the install. 

  • If true, the campaign is attributed for bringing the install.
  • If false, the campaign is recognized as contributing to the install, but it isn't included in any SKAN dashboards or reports.
  • If null, iOS didn't populate the field due to a legacy iOS or SKAdNetwork version.
 Boolean Yes

fidelity_type

 2.2 (iOS 14.5)

Differentiate between ad presentation options that affect attribution. Indicated using the values 0 and1 as follows: 

  • View-though ads (0)
  • StoreKit-rendered ads (1)

Disregard the field value if the SKAN version is before 2.2

 Integer Yes

ad_network_source_app_id

 Ad network Publisher app ID reported by the ad network. Use to help reconcile cost; reported by the ad network. The publisher app gives the basis for this data.  String No

ad_network_channel

 Ad network   String No

af_prt

 Ad network   String No

skad_postback_sequence_index

 4.0 (iOS 16.2)
  • Value represents the SKAN window, either0,1, or2.
  • For SKAN 3 the value is0
 Integer Yes
skad_coarse_conversion_value

4.0 (iOS 16.2)

 
  • Value can below,medium, orhigh.
  • For SKAN 3 the value isnull.
 String Yes
skad_source_identifier 4.0 (iOS 16.2)
  • Value can be up to 4 digits.
  • For SKAN 3 the value isnull. 
 String Yes
skad_source_domain 4.0 (iOS 16.2)
  • Value represents the source of attributable web ads.
  • For SKAN 3 the value isnull.
 String Yes
ad_network_creative Ad network
  • Value is based on data enrichment received from the ad network.
  • For SKAN 3 the value is null.
 String No

** Apple determines if the field is populated using a privacy-threshold mechanism 

 

Fields available in decoded event reports

Field name Source Description Format Included in SRN advertising dimensions report
ad_network_campaign_id Ad network Campaign ID reported by the ad network to AppsFlyer String Yes
ad_network_campaign
_name		 Ad network Campaign name reported by the ad network to AppsFlyer String Yes
ad_network_timestamp Ad network

Time the postback was received by the ad network

In the case of Google Ads, this field isn't populated. 

Timestamp

(time string for SRN advertising dimensions report)

 Yes
app_id iOS The app ID (advertiser app) String Yes
city   Starting August 30, 2021, always null  String No
country_code Ad network   String No
dma   Starting August 30, 2021, always null  String No
event_name AppsFlyer

In-app event name as configured in AppsFlyer.

For the SRN ___report, this is the in-app event name as configured in Meta ads.

 String Yes
event_uuid AppsFlyer A unique random identifier enabling partners to identify duplicate postbacks String No
install_date iOS Estimated by AppsFlyer based on the postback arrival time. Time string No
install_type iOS New installs String No
ip iOS

The IP address in the HTTP message of the iOS device sending the postback.

This field is populated if the ad network provides us with the address.

Note! The SDK isn't involved in getting the address. 

 String No
media_source iOS Ad network attributed using AppsFlyer network names String Yes
postal_code   Starting August 30, 2021, always null  String No
region AppsFlyer Determined according to the country_code String No
skad_ad_network_id iOS ID of the ad network to whom the postback was sent String No
skad_ambiguous_event AppsFlyer If true, the iOS postback was received during the first 72-hours after an advertiser changed the SKAN settings in the dashboard. Due to the various timers employed by SKAN, AppsFlyer can't map the event accurately. Boolean No
skad_attribution_signature iOS   String No
skad_campaign_id iOS Campaign ID used to publish the ad. Range 0-100 Integer No
skad_conversion_value iOS

Conversion value reported by iOS. Range 0-63.

If null, iOS didn't populate the field**

 Integer No
skad_mode AppsFlyer

The conversion measurement mode used to decode the iOS postback. Options:

  • custom_decode
  • revenue
  • events
  • skan4
  • custom_encode
  • engagement
 String No
skad_redownload iOS If true, the app was redownloaded Boolean No
skad_revenue iOS Event revenue amount in USD. Float No
skad_source_app_id iOS

Site ID - the app publishing the ad.

Field population depends on privacy thresholds**

 String No
skad_transaction_id iOS - String No
skad_version iOS - String No
timestamp iOS

Time that AppsFlyer received the SKAN postback.

For Google Ads and Meta ads, this is the time AppsFlyer gets the data from the Google and Meta ads API, respectively.

Timestamp

(time string for SRN advertising dimensions report)

 Yes
event_value S2S

Default value: null

Contains a string set by apps implementing custom decode or event sending by S2S. 

Advertisers consume this in their systems. AppsFlyer doesn't make use of it. 

 String (JSON) No

ad_network_adset_id

 Ad network   String Yes

ad_network_adset_name

 Ad network   String Yes

ad_network_ad_name

 Ad network   String Yes

ad_network_ad_id

 Ad network

 

 String Yes

skad_did_win (1)

 3.0 (iOS 14.6)

Used to distinguish between campaigns contributing or attributed with the install. 

  • If true, the campaign is attributed for bringing the install.
  • If false, the campaign is recognized as contributing to the install, but it isn't included in any SKAN dashboards or reports.
  • If null, iOS didn't populate the field due to a legacy iOS or SKAdNetwork version.
 Boolean No

skad_fidelity_type (1)

 2.2 (iOS 14.5)

Differentiate between ad presentation options that affect attribution. Indicated using the values 0 and1 as follows: 

  • View-though ads (0)
  • StoreKit-rendered ads (1)

Disregard the field value if the SKAN version is before 2.2

 Integer Yes

ad_network_source_app_id (1)

 Ad network Publisher app ID reported by the ad network. Use to help reconcile cost; reported by the ad network. The basis for this data is provided by the publisher app. String No

ad_network_channel (1)

 Ad network   String No

af_prt (1)

 Ad network   String No

min_revenue 

 AppsFlyer See note (4) Real number No

max_revenue 

 AppsFlyer See note (4) Real number No

event_revenue

 AppsFlyer

Formula: [sum of values for the specific event in USD]/[The number of events that happened on a specific day]

 Float Yes

min_event_counter

 AppsFlyer Use to calculate the number of times a user performs an event. See note (3) Integer No

max_event_counter

 AppsFlyer See note (3) Integer No

min_time_post_install

 AppsFlyer See note (5) Integer No

max_time_post_install

 AppsFlyer See note (5) Integer No

af_attribution_flag

 AppsFlyer

When the Single Source of Truth (SSOT) mechanism is on: If true, the install was attributed by both AppsFlyer and SKAN. If false, the install wasn't attributed by AppsFlyer. If the skad_conversion_value is null, the flag is either true or false (based on modeling).

 Boolean No

measurement_window

 AppsFlyer Duration of the activity window. Default 24h.  Integer No

interval

 AppsFlyer Activity window intervals.  Integer No

user_agent

 AppsFlyer Device user agent String No

skad_postback_sequence_index

 4.0 (iOS 16.2)
  • Value represents the SKAN window, either0,1, or2.
  • For SKAN 3 the value is0
 Integer Yes
skad_coarse_conversion_value

 

4.0 (iOS 16.2)
  • Value can below,medium, orhigh.
  • For SKAN 3 the value isnull.
 String Yes
skad_source_identifier 4.0 (iOS 16.2)
  • Value can be up to 4 digits.
  • For SKAN 3 the value isnull. 
 String Yes
skad_source_domain 4.0 (iOS 16.2)
  • Value represents the source of attributable web ads.
  • For SKAN 3 the value isnull.
 String Yes
ad_network_creative Ad network
  • Value is based on data enrichment received from the ad network.
  • For SKAN 3 the value is null.
 String No

** Apple determines if the field is populated using a privacy threshold mechanism

(1) Starting June 2, 2021, the field is added to reports but won't necessarily be populated.

(3) To determine the number of times a user performs a given in-app event use the formula: [round up (min_event_counter + max_event_counter) / 2] . Note!  You must round up the nearest integer.
Example:
A. If min = 0 and max = 1 the average is 0.5; rounding up returns a result of 1.
B. If min = 5 and max = 10, the average is 7.5; rounding up returns a result of 8.

(4) Revenue is always provided in the field skad_revenue. If you use SKAN 4 or Custom mode, the bucket range associated with the event and used to calculate skad_revenue is described by min_revenue and max_revenue.

(5)

  • In Custom conversion: AppsFlyer calculates install time as the postback arrival time - 36h - average (min_time_post_install + max_time_post_install). However, if CV=0 then average (min_time_post_install + max_time_post_install) is regarded as 0. 
  • In Decode conversion: The min_time_post_install is one hour less than that set in max_time_post_install which is equal to hours_from_install set by you in your Decode conversion mapping. 

 

Additional information

Traits and limitations

Trait Remarks 
Ad network access Ad networks are provided with postbacks
Agency access Not available
Agency transparency N/A
Timezone UTC
Currency  USD
Organic data Based on SDK event data. For example, organic install metrics are calculated as follows: Data of all installs reported by the SDK less non-organic installs reported by SKAN.
Non-organic data Based on SKAN postbacks
Data freshness

Daily. SKAN timing means that iOS reports on an install 24-48 hours after the window closes.
Historical data

Limited to the Data Locker availability window. 
Account user access Available. According to account permissions