AdCOM section navigation

Enumeration lists1.0

42 lists · 303 values

On this page

Creative & formats（9）
Video / audio playback（10）
Native（4）
Device & location（6）
Content & categories（5）
Delivery, tracking & API（5）
Identity & audit（3）

Data status: machine-generated first draft. List names are kept in English; list descriptions and value meanings are Chinese translations (draft); where this differs from the official text, the official AdCOM v1.0 FINAL.md prevails.

Creative & formats9

Click Types

5 values

The following table lists the types of creative activation (i.e., click) behavior types.

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
0	Non-Clickable
1	Clickable - Details Unknown
2	Clickable - Embedded Browser/Webview
3	Clickable - Native Browser
500+	Vendor-specific codes.

Companion Types

3 values

The following table lists the options to indicate markup types allowed for companion ads that apply to video and audio ads. This table is derived from VAST 2.0+ and DAAST 1.0+ specifications.

Referenced by (OpenRTB 2.6):Video.companiontype · Audio.companiontype

ID	Meaning
1	Static Resource
2	HTML Resource
3	iframe Resource

Creative Attributes

24 values

The following table specifies a standard list of creative attributes that can describe an actual ad or restrictions relative to a given placement.

Referenced by (OpenRTB 2.6):Banner.battr · Video.skip · Video.battr · Audio.battr · Native.battr · Bid.attr

ID	Meaning
1	Audio Ad (Autoplay)
2	Audio Ad (User Initiated)
3	Expandable (Automatic)
4	Expandable (User Initiated - Click)
5	Expandable (User Initiated - Rollover)
6	In-Banner Video Ad (Autoplay)
7	In-Banner Video Ad (User Initiated)
8	Pop (e.g., Over, Under, or Upon Exit)
9	Provocative or Suggestive Imagery
10	Shaky, Flashing, Flickering, Extreme Animation, Smileys
11	Surveys
12	Text Only
13	User Interactive (e.g., Embedded Games)
14	Windows Dialog or Alert Style
15	Has Audio On/Off Button
16	Ad Provides Skip Button (e.g. VPAID-rendered skip button on pre-roll video)
17	Adobe Flash
18	Responsive; Sizeless; Fluid (i.e., creatives that dynamically resize to environment)
19	Contains advertiser QR Code
20	Support alpha channel transparency
21	Static Visual. Creative contains no perceptible motion and renders as a static visual, even if delivered in a video file format (e.g., MP4). No animated elements or time-based visual transitions are present.
22	Limited Motion (Cinemagraph). Creative contains subtle or localized motion within an otherwise static composition. Motion is minimal, looped, and does not constitute full-scene animation or continuous narrative progression.
23	Full-Motion Video. Creative contains continuous or scene-level motion typical of standard video assets, including dynamic visual transitions, camera movement, or narrative progression across frames.
500+	Vendor-specific codes.

Creative Subtypes - Audio/Video

16 values

The following table lists the various subtypes of audio and video ad creatives.

Referenced by (OpenRTB 2.6):Video.protocols · Audio.protocols · Bid.protocol

ID	Meaning
1	VAST 1.0
2	VAST 2.0
3	VAST 3.0
4	VAST 1.0 Wrapper
5	VAST 2.0 Wrapper
6	VAST 3.0 Wrapper
7	VAST 4.0
8	VAST 4.0 Wrapper
9	DAAST 1.0
10	DAAST 1.0 Wrapper
11	VAST 4.1
12	VAST 4.1 Wrapper
13	VAST 4.2
14	VAST 4.2 Wrapper
15	VAST 4.3
16	VAST 4.3 Wrapper

Creative Subtypes - Display

4 values

The following table lists the various subtypes of display ad creatives.

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
1	HTML
2	AMPHTML
3	Structured Image Object
4	Structured Native Object

Expandable Directions

6 values

The following table lists the directions in which an expandable ad may expand, given the positioning of the ad unit on the page and constraints imposed by the content.

Referenced by (OpenRTB 2.6):Banner.expdir

ID	Meaning
1	Left
2	Right
3	Up
4	Down
5	Full Screen
6	Resize/Minimize (make smaller)

Linearity Modes

2 values

The following table indicates the options for media linearity (typically video). This corresponds to the required type of VAST response, where a linear response is VAST containing video assets, and non-linear is a VAST response (typically) containing a banner/overlay.

Referenced by (OpenRTB 2.6):Video.linearity

ID	Meaning
1	Linear
2	Non-Linear (i.e., Overlay)

Production Qualities

4 values

The following table lists the options for content quality. These values are defined by the IAB; refer to [www.iab.com/wp-content/uploads/2015/03/long-form-video-final.pdf](www.iab.com/wp-content/uploads/2015/03/long-form-video-final.pdf) for more information.

Referenced by (OpenRTB 2.6):Content.prodq

ID	Meaning
0	Unknown
1	Professionally Produced
2	Prosumer
3	User Generated (UGC)

Size Units

3 values

The following table lists the units of height and width used by creatives, assets, and placement specifications where noted.

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
1	Device Independent Pixels (DIPS)
2	Inches
3	Centimeters

Video / audio playback10

Feed Types

8 values

The following table lists the types of feeds for audio.

Referenced by (OpenRTB 2.6):Audio.feed

ID	Meaning
1	AOD Music streaming service
2	LIVE FM/AM broadcast (live content broadcast over the air but also available via online streaming)
3	AOD Podcast (original, pre-recorded content distributed as episodes in a series)
4	AOD Catch-up radio (recorded segment of a radio show that was originally broadcast live)
5	LIVE Web radio (live content only available via online streaming, not as AM/FM broadcast)
6	MISC Video game (background audio in video games)
7	MISC Text to speech (audio books, website plugin that can read article)
500+	MISC Vendor-specific codes.

Placement Positions

18 values

The following table lists the placement positions as a relative measure of visibility or prominence. This table has values derived from the TAG Inventory Quality Guidelines (IQG).

Referenced by (OpenRTB 2.6):Banner.pos · Video.pos

ID	Meaning
0	Unknown
1	Above The Fold
2	Locked (i.e., fixed position)
3	Below The Fold
4	Header
5	Footer
6	Sidebar
7	Fullscreen
8	Partial Screen
9	Top Left
10	Top Right
11	Frame the content
12	Double box
13	Double box with background
14	Bottom Left
15	Bottom Right
16	L shape
17	Reversed L shape

Plcmt Subtypes - Video

9 values

The following table lists the various types of video placements in accordance with updated IAB Digital Video Guidelines. To be sent using <code>plcmt</code> attribute in <strong>Object:Video</strong>. Please refer to the <a href=https://github.com/InteractiveAdvertisingBureau/openrtb2.x/blob/main/implementation.md#710---updated-video-signals>implementation guide</a> for examples and information on how to use the updated signals.

Referenced by (OpenRTB 2.6):Video.plcmt

ID	Meaning
1	Instream: Pre-roll, mid-roll, and post-roll ads that are played before, during or after the streaming video content that the consumer has requested. Instream video must be set to “sound on” by default at player start, or have explicitly clear user intent to watch the video content. While there may be other content surrounding the player, the video content must be the focus of the user’s visit. It should remain the primary content on the page and the only video player in-view capable of audio when playing. If the player converts to floating/sticky subsequent ad calls should accurately convey the updated player size.
2	Accompanying Content: Pre-roll, mid-roll, and post-roll ads that are played before, during, or after streaming video content. The video player loads and plays before, between, or after paragraphs of text or graphical content, and starts playing only when it enters the viewport. Accompanying content should only start playback upon entering the viewport. It may convert to a floating/sticky player as it scrolls off the page.
3	Interstitial:Video ads that are played without video content. During playback, it must be the primary focus of the page and take up the majority of the viewport and cannot be scrolled out of view. This can be in placements like in-app video or slideshows.
4	No Content/Standalone: Video ads that are played without streaming video content. This can be in placements like slideshows, native feeds, in-content or sticky/floating.
5	Pause: An ad present in streaming video content that the consumer has requested. While there may be other content surrounding the player, the video content must be the focus of the user’s visit. It should remain the primary content on the page and the only video player in-view.
6	Screensaver: An ad present, when OS/App Screen Saver are initiated.
7	Overlay: Ads occurring during program content and outside of the traditional ad break. The ad format places ad creatives over top of the program content, often as a banner or picture in picture execution. While there may be other content surrounding the player with the overlay, the player with the overlay must be the focus of the user’s visit. It should remain the primary content on the page and the primary video player in-view.
8	Squeezeback: Ads Alongside or Adjacent to Content, also known as L-Shape Ads & Double Box, are ads that occur during program content and outside of the traditional ad break. The program content is resized to allow for placement of an ad on the screen. In a squeezeback, none of the content is covered by the ad, instead it shares screen space with the ad. This is the major distinction between squeezeback and overlay. While there may be other content surrounding the player with the squeezeback, the player with the squeezeback must be the focus of the user’s visit. It should remain the primary content on the page and the primary video player in-view.
9	In-scene: A form of advertising that integrates branded elements directly within the content itself, rather than appearing as separate pre-roll, mid-roll, overlay, or display formats. In Scene Advertising is composited into the video content and blends the brand naturally into the scene, environment, or storyline, ensuring contextual relevance and viewer immersion without interrupting the user experience. In-scene ads typically consist of product placements or virtual out of A insertions. At this time, the standardization focuses on the out of home insertions in non-live content. While there may be other content surrounding the player with the in-scene ad, the player with the in-scene ad must be the focus of the user’s visit. It should remain the primary content on the page and the primary video player in-view.

Playback Cessation Modes

3 values

The following table lists the various modes for when media playback terminates.

Referenced by (OpenRTB 2.6):Video.playbackend

ID	Meaning
1	On Video Completion or when Terminated by User
2	On Leaving Viewport or when Terminated by User
3	On Leaving Viewport Continues as a Floating/Slider Unit until Video Completion or when Terminated by User

Playback Methods

11 values

The following table lists the various media playback methods.

Referenced by (OpenRTB 2.6):Video.playbackmethod

ID	Meaning
1	Initiates without any specific user interaction with Sound On
2	Initiates without any specific user interaction Sound Off by Default
3	Initiates on Click with Sound On
4	Initiates on Mouse-Over or cursor over with Sound On
5	Initiates on Entering Viewport or scrolling into view with Sound On
6	Initiates on Entering Viewport or scrolling into view with Sound Off by Default
7	Continuous Playback - Media playback is set to play additional media automatically without user interaction. The media player will keep playing additional media (playlist or generated) for the user until the user actively stops this from happening.
8	Initiated by user pausing content, Sound on
9	Initiated by user pausing content, Sound off
10	Initiated by idling (e.g. screensaver), Sound on
11	Initiated by idling (e.g. screensaver), Sound off

Pod Deduplication Settings

5 values

The following table lists the various pod deduplication settings.

Referenced by (OpenRTB 2.6):Video.poddedupe

ID	Meaning
1	Deduplicated on adomain
2	Deduplicated on IAB Tech Lab Content Taxonomy
3	Deduplicated on creative ID
4	Deduplicated on mediafile URL
5	No deduplication

Pod Sequence

3 values

The following table lists the values for the pod sequence field, for use in audio and video content streams with one or more ad pods.

Referenced by (OpenRTB 2.6):Audio.podseq

ID	Meaning
-1	Last pod in the content stream
0	Any pod in the content stream
1	First pod in the content stream

Slot Position in Pod

4 values

The following table lists the values for the slot position in pod field, for use in audio and video ad pods.

Referenced by (OpenRTB 2.6):Video.slotinpod · Audio.slotinpod

ID	Meaning
-1	Last ad in the pod
0	Any ad in the pod
1	First ad in the pod
2	First or Last ad in the pod

Start Delay Modes

4 values

The following table lists the various options for the video or audio start delay. If the start delay value is greater than 0, then the position is mid-roll and the value indicates the start delay.

Referenced by (OpenRTB 2.6):Video.startdelay · Audio.startdelay

ID	Meaning
>0	Mid-Roll (value indicates start delay in second)
0	Pre-Roll
-1	Generic Mid-Roll
-2	Generic Post-Roll

Volume Normalization Modes

5 values

The following table lists the types of volume normalization modes, typically for audio.

Referenced by (OpenRTB 2.6):Audio.nvol

ID	Meaning
0	None
1	Ad Volume Average Normalized to Content
2	Ad Volume Peak Normalized to Content
3	Ad Loudness Normalized to Content
4	Custom Volume Normalization

Native4

Display Context Types

13 values

The following table lists the types of context in which a native ad may appear (i.e., the type of content surrounding the ad on the page). This is intended to denote primary content although other content may also appear on the page. Note that there are two levels of detail grouped by 10s (i.e., 12 is a refined case of 100).

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
10	Content-centric context (e.g., newsfeed, article, image gallery, video gallery, etc.).
11	- Primarily article content, which could include images, etc. as part of the article.
12	- Primarily video content.
13	- Primarily audio content.
14	- Primarily image content.
15	- User-generated content (e.g., forums, comments, etc.).
20	Social-centric context (e.g., social network feed, email, chat, etc.).
21	- Primarily email content.
22	- Primarily chat/IM content.
30	Product context (e.g., product listings, details, recommendations, reviews, etc.).
31	- App store/marketplace.
32	- Product reviews site primarily, which may sell product secondarily.
500+	Vendor-specific codes.

Display Placement Types

5 values

The following table lists the general types of display placements; the locations where a native ad may be shown in relationship to the surrounding content.

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
1	In the feed of content (e.g., as an item inside the organic feed, grid, listing, carousel, etc.).
2	In the atomic unit of the content (e.g., in the article page or single image page).
3	Outside the core content (e.g., in the ads section on the right rail, as a banner-style placement near the content, etc.).
4	Recommendation widget; most commonly presented below article content.
500+	Vendor-specific codes.

Native Data Asset Types

13 values

The following table is a list of common data asset types. This list is non-exhaustive and is intended to be expanded over time. Size recommendations are noted as "*maximum length of at least*", which means the publisher or supply platform should support a maximum length of at least this value and the buying platform knows that a string of this size should be accepted.

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
1	sponsored: "Sponsored By" message which should contain the brand name of the sponsor. Recommended maximum length of at least 25 characters.
2	desc: Descriptive text associated with the product or service being advertised. Long text lengths may be truncated or ellipsed when rendered. Recommended maximum length of at least 140 characters.
3	rating: Numeric rating of the product (e.g., an app's rating). Recommended integer range of 0-5.
4	likes: Number of social ratings or "likes" of the product.
5	downloads: Number downloads and/or installs of the product.
6	price: Price of the product, app, or in-app purchase. Value should include currency symbol in localized format (e.g., "$10").
7	saleprice: Sale price that can be used together with "price" to indicate a comparative discounted price. Value should include currency symbol in localized format (e.g., "$8.50").
8	phone: A formatted phone number.
9	address: A formatted address.
10	desc2: Additional descriptive text associated with the product.
11	displayurl: Display URL for the ad. To be used when sponsoring entity doesn't own the content (e.g., "Sponsored by Brand on Site", where Site is specified in this data asset).
12	ctatext: Description of the call to action (CTA) button for the destination URL. Recommended maximum length of at least 15 characters.
500+	Vendor-specific codes.

Native Image Asset Types

3 values

The following table is a list of common image asset types. This list is non-exhaustive and is intended to be expanded over time. Size recommendations are noted as "*maximum height or width of at least*", which means the publisher or supply platform should support a maximum height or width of at least this value and the buying platform knows that an image of this size should be accepted.

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
1	Icon: Icon image.
3	Main: Large image preview for the ad.
500+	Vendor-specific codes.

Device & location6

Connection Types

7 values

The following table lists the options for the type of device connectivity.

Referenced by (OpenRTB 2.6):Device.connectiontype

ID	Meaning
1	Ethernet; Wired Connection
2	WIFI
3	Cellular Network - Unknown Generation
4	Cellular Network - 2G
5	Cellular Network - 3G
6	Cellular Network - 4G
7	Cellular Network - 5G

Device Types

8 values

The following table lists the types of devices. This table has values derived from the TAG Inventory Quality Guidelines (IQG).

Referenced by (OpenRTB 2.6):Device.devicetype

ID	Meaning
1	Mobile/Tablet - General
2	Personal Computer
3	Connected TV
4	Phone
5	Tablet
6	Connected Device
7	Set Top Box
8	OOH Device

IP Location Services

6 values

The following table lists the services and/or vendors used for resolving IP addresses to geolocations.

Referenced by (OpenRTB 2.6):Geo.ipservice

ID	Meaning
1	ip2location
2	Neustar (Quova)
3	MaxMind
4	NetAcuity (Digital Element)
511	51Degrees (High Confidence)
512	51Degrees (Medium Confidence)

Location Types

3 values

The following table lists the options to indicate how the geographic information was determined.

Referenced by (OpenRTB 2.6):Geo.type

ID	Meaning
1	GPS/Location Services
2	IP Address
3	User Provided (e.g., registration data)

Operating Systems

30 values

The following table lists the options for device operating system.

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
0	Other Not Listed
1	3DS System Software
2	Android
3	Apple TV Software
4	Asha
5	Bada
6	BlackBerry
7	BREW
8	ChromeOS
9	Darwin
10	FireOS
11	FirefoxOS
12	HelenOS
13	iOS
14	Linux
15	MacOS
16	MeeGo
17	MorphOS
18	NetBSD
19	NucleusPLUS
20	PS Vita System Software
21	PS3 System Software
22	PS4 Software
23	PSP System Software
24	Symbian
25	Tizen
26	WatchOS
27	WebOS
28	Windows
500+	Vendor-specific codes.

User-Agent Source

4 values

The following table lists the possible sources for User-Agent metadata.

Referenced by (OpenRTB 2.6):UserAgent.source

ID	Meaning
0	Unspecified/unknown
1	User-Agent Client Hints (only low-entropy headers were available)
2	User-Agent Client Hints (with high-entropy headers available)
3	Parsed from User-Agent header (the same string carried by the ua field)

Content & categories5

Category Taxonomies

10 values

The following table lists the options for taxonomies that can be used to describe content, audience, and ad creative categories.

Referenced by (OpenRTB 2.6):BidRequest.cattax · Site.cattax · App.cattax · Publisher.cattax · Content.gtax · Content.cattax · Producer.cattax · Bid.cattax

ID	Meaning
1	IAB Tech Lab Content Category Taxonomy 1.0: Deprecated, and recommend NOT be used since it does not have SCD flags.
2	IAB Tech Lab Content Category Taxonomy 2.0: Deprecated, and recommend NOT be used since it does not have SCD flags.
3	IAB Tech Lab Ad Product Taxonomy 1.0.
4	IAB Tech Lab Audience Taxonomy 1.1
5	IAB Tech Lab Content Taxonomy 2.1
6	IAB Tech Lab Content Taxonomy 2.2
7	IAB Tech Lab Content Taxonomy 3.0
8	IAB Tech Lab Ad Product Taxonomy 2.0
9	IAB Tech Lab Content Taxonomy 3.1
500+	Vendor-specific codes.

Content Contexts

7 values

The following table lists the various options for indicating the type of content being used or consumed by the user in which ads may appear. This table has values derived from the TAG Inventory Quality Guidelines (IQG).

Referenced by (OpenRTB 2.6):Content.context

ID	Meaning
1	Video (i.e., video file or stream such as Internet TV broadcasts)
2	Game (i.e., an interactive software game)
3	Music (i.e., audio file or stream such as Internet radio broadcasts)
4	Application (i.e., an interactive software application)
5	Text (i.e., primarily textual document such as a web page, eBook, or news article)
6	Other (i.e., none of the other categories applies)
7	Unknown

DOOH Multiplier Measurement Source Types

4 values

The following table lists the types of entities that provide quantity measurement for impression multipliers, which are common in Out of Home advertising.

Referenced by (OpenRTB 2.6):Qty.sourcetype

ID	Meaning
0	Unknown
1	Measurement Vendor Provided
2	Publisher Provided
3	Exchange Provided

DOOH Venue Taxonomies

6 values

The following table contains a list of supported taxonomies describing the locations and contexts in which Out-Of-Home media may be experienced. Taxonomies entries are expected to refer to a specific version, unless a given taxonomy has explicit semantics for forward compatibility and handling updates. The specifics of how to serialize values for a given taxonomy are expected to be defined by the given taxonomy.

Referenced by (OpenRTB 2.6):DOOH.venuetypetax

ID	Meaning
0	AdCom DOOH Venue Types (deprecated)
1	OpenOOH Venue Taxonomy 1.0 https://github.com/openooh/venue-taxonomy/blob/main/specification-1.0.md
2	DPAA Device Venue Types https://github.com/InteractiveAdvertisingBureau/AdCOM/blob/master/AdCOM%20v1.0%20FINAL.md#list--dooh-venue-types-
3	DMI Categorization of Venues 1.1 https://www.dmi-org.com/download/DMI_Standards_for_DOOH_Venues.pdf
4	OMA taxonomy Jan 2022 https://www.oma.org.au/industry-standards
5	OpenOOH Venue Taxonomy 1.1 https://github.com/openooh/venue-taxonomy/blob/main/specification-1.1.md

Media Ratings

3 values

The following table lists the media ratings used in describing content based on the TAG Inventory Quality Guidelines (IQG) v2.1 categorization. Refer to [www.iab.com/guidelines/digital-video-suite](https://www.iab.com/guidelines/digital-video-suite) for more information.

Referenced by (OpenRTB 2.6):Content.qagmediarating · Bid.qagmediarating

ID	Meaning
1	All Audiences
2	Everyone Over Age 12
3	Mature Audiences

Delivery, tracking & API5

API Frameworks

10 values

The following table is a list of API frameworks either supported by a placement or required by an ad.

Referenced by (OpenRTB 2.6):Banner.api · Video.api · Audio.api · Native.api · Bid.apis

ID	Meaning
1	VPAID 1.0
2	VPAID 2.0
3	MRAID 1.0
4	ORMMA
5	MRAID 2.0
6	MRAID 3.0
7	OMID 1.0
8	SIMID 1.0
9	SIMID 1.1
500+	Vendor-specific codes.

Auto Refresh Triggers

4 values

The following table is a list of triggers that result in an ad slot refreshing.

Referenced by (OpenRTB 2.6):RefSettings.reftype

ID	Meaning
0	UNKNOWN
1	User Action: Refresh triggered by user-initiated action such as scrolling.
2	Event: Event-driven content change. For example, ads refresh when the football game score changes on the page.
3	Time:Time-based refresh. Ads refresh on a predefined time interval even without user activity.

Delivery Methods

3 values

The following table lists the various options for the delivery of video or audio content.

Referenced by (OpenRTB 2.6):Video.delivery · Audio.delivery

ID	Meaning
1	Streaming
2	Progressive
3	Download

Event Tracking Methods

3 values

The following table lists the available methods of tracking of ad events. Vendor specific codes may include custom measurement companies (e.g., Moat, Doubleverify, IAS, etc.).

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
1	Image-Pixel: URL provided will be inserted as a 1x1 pixel at the time of the event.
2	JavaScript: URL provided will be inserted as a JavaScript tag at the time of the event.
500+	Vendor-specific codes.

Event Types

6 values

The following table lists the types of ad events available for tracking. These types refer to the actual event, timing, etc.; not the method of firing. Scripts that are performing measurement should be deployed at the "loaded" event.

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
1	loaded: Delivered as a part of the creative markup. Creative may be pre-cached or pre-loaded; prior to initial rendering.
2	impression: Ad impression per IAB/MRC Ad Impression Measurement Guidelines.
3	viewable-mrc50: Visible impression using MRC definition of 50% in view for 1 second.
4	viewable-mrc100: 100% in view for 1 second (i.e., the GroupM standard).
5	viewable-video50: Visible impression for video using MRC definition of 50% in view for 2 seconds.
500+	Vendor-specific codes.

Identity & audit3

Agent Types

4 values

This list identifies the user agent types a user identifier is from.

Referenced by (OpenRTB 2.6):UID.atype

ID	Meaning
1	An ID which is tied to a specific web browser or device (cookie-based, probabilistic, or other).
2	In-app impressions, which will typically contain a type of device ID (or rather, the privacy-compliant versions of device IDs).
3	A person-based ID, i.e., that is the same across devices.
500+	Vendor-specific codes.

Audit Status Codes

7 values

The following table lists the codes used in `Audit` objects to reflect status or workflow state.

Not referenced by OpenRTB 2.6 fields (AdCOM-standalone list)

ID	Meaning
1	Pending Audit: An audit has not yet been completed on this ad. A recommendation cannot be made to use this ad, but vendors' policies may override.
2	Pre-Approved: An audit has not yet been completed on this ad. Subject to vendors' policies, it can be recommended for use. However, once the audit has been completed, its status will change and it may or may not be approved for continued use.
3	Approved: The audit is complete and the ad is approved for use. Note, however, that some attributes (e.g., adomain, cat, attr, etc.) may have been changed in the process by the auditor.
4	Denied: The audit is complete, but the ad has been found unacceptable in some material aspect and is disapproved for use.
5	Changed; Resubmission Requested: A version of the ad has been detected in use that is materially different from the version that was previously audited, which may result in rejection during use until the ad is resubmitted for audit and approved. Vendors need to communicate offline as to the criteria that constitutes a material change.
6	Expired: The ad has been marked as expired by the vendor. Vendors need to communicate offline as to the expected bidding behavior for ads with this status.
500+	Vendor-specific codes.

ID Match Methods

7 values

The following table contains enumerations for various ways an ID could be matched to an ad request, and if they pertain to a single property or app. It should be used on conjunction with the <code>mm</code> attribute in <a href=https://github.com/InteractiveAdvertisingBureau/openrtb2.x/blob/main/2.6.md#3227---object-eid->Object: EID</a> of OpenRTB 2.x.

Referenced by (OpenRTB 2.6):EID.mm

ID	Meaning
0	Unknown
1	No Match No matching has occurred. The associated ID came directly from a 3rd-party cookie or OS-provided resettable device ID for advertising (IFA).
2	Browser Cookie Sync Real time cookie sync as described in Appendix: Cookie Based ID Syncing of OpenRTB 2.x
3	Authenticated ID match was based on user authentication such as an email login or hashed PII
4	Observed ID match was based on a 1st party observation, but without user authentication (e.g. GUID, SharedID, Session IDs, CHIPS or other 1st party cookies contained in localStorage)
5	Inference ID match was inferred from linkage based on non-authenticated features across multiple browsers or devices (e.g. IP address and/or UserAgent)
500+	Vendor Specific