Jump to non-delivery causes: Most common | Privacy and consent policy | Ad selection | Bid response filtering | Programmatic deals | Open bidding | Video and audio
For each line item, Google Ad Manager shows recent changes that might affect delivery and top reasons why the line item didn't deliver to eligible ad requests. Understanding why a line item hasn't delivered can help you troubleshoot unexpected behavior.
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- Sign in to Google Ad Manager.
- Navigate to Delivery, and then Line items.
- Use filters to find and select the line item that isn't delivering.
- Select the line item's Troubleshoot tab.
See recent changes that might be affecting delivery
In the "Health history" section, you can see recent changes made to the line item's settings, historical forecasts run for the line item, and other significant spikes or dips in delivery. Each day in the calendar displays the line item's historical delivery progress toward its goal. The calendar also displays when the first impression served, which can be helpful if a line item started to deliver later than anticipated. The calendar shows the last 7 days by default, but you can see events for the last 45 days by clicking the arrows above the calendar.
For each day in the calendar, you can hover to see more information about the line item's targeting goals for that day. If an event occurred on that day, you can click the day and then click View Change History to see the specific changes made on that day.
In the "Non-delivery causes" section, if the line item didn't deliver, a pie chart will show the most common reasons the line item didn't deliver to eligible ad requests.
Above the pie chart you can see an estimate of eligible ad requests and the creative render rate:
An estimate of the number of ad requests where this line item was eligible but not selected to serve (rounded to two significant digits).
Creative render rate is the percentage of times a line item served and successfully rendered a creative. The percentage is calculated by comparing impressions and code served.
A line item may serve but fail to render a creative for several reasons. For instance, a user might navigate away from the page before the creative is able to show or there might be poor connectivity with the user's device and the creative is never able to load. In cases like this, the line item served, but the creative associated with the line item failed to render. As a result, creative render rates can be below 100%.
Creative render rates below 100% are normal and should not be cause for concern unless there's a large disparity. If you see a creative render rate below 80% for display, 50% for video, or 30% for apps, do one or both of the following:
- Run an Ad Speed report. The Ad Speed report displays a snapshot of your network's ad serving speed over the last 30 days and can help you identify ways to improve latency.
- Check non-logged drop-offs. Non-logged drop-offs can be determined by running VAST errors report with the "Total code served count" and the "Ad impressions" metrics and comparing the two values.
- Click See delivered line items for details about winning line items (not available for every non-delivery cause). Note that the winning line item is not necessarily the line item to which the rejected line item lost.
- Click Launch ad slot troubleshooting to open Ad Manager Delivery tools and learn why certain ads delivered and not others, which line items would deliver if you were to request the ad slot again, and more.
- Use the Time period to display drop-down menu to see non-delivery causes over the last 7 days or the last 24-hour, 12-hour, 6-hour, or 3-hour period.
You can also see non-delivery causes when you export line items to a spreadsheet. Make sure to filter on a small number of line items, or the export may time out.
Why is my non-delivery causes chart missing?
If you don't see the non-delivery chart, these are possible reasons why:
- Line item always delivers, so there aren't any non-deliveries to troubleshoot.
The line item delivers and is on track to meet its goal, or it's a standard line item with very narrow targeting criteria.
- Line item did not deliver at all in the last 7 days.
The tool looks at the last 7 days of data. Check the line item status to ensure that it's delivering. A line item may have a pre-delivery status or be paused or complete.
- There's not enough data.
The "non-delivery causes" tool samples queries and requires a sufficient number of queries over the past 7 days to show non-delivery causes.
Some reasons for non-delivery are valid and don't require action, while others may require changes. The sections below provide more details.
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Ad Manager can increase your revenue with dynamic allocation—by selectively giving buyers access to valuable inventory when it won’t impact the likelihood of a campaign completing. This non-delivery cause means that an ad coming from an indirect or "backfill" channel—namely, Ad Exchange, AdSense, or AdMob—lost to an Ad Manager line item. This could be because the ad from the indirect channel was not returned or because the Ad Manager line item had a higher CPM.
Action
Likely none. This is expected behavior.
Ad Manager can increase your revenue with dynamic allocation—by selectively giving buyers access to valuable inventory when it won’t impact the likelihood of a campaign completing. This non-delivery cause means that the line item was selected as the winner among reservation line item candidates, but ultimately lost to an ad coming from an indirect or "backfill" channel—namely, Ad Exchange, AdSense, or AdMob—with a higher CPM.
Action
Likely none. This is expected behavior.
Roadblocks are a common reason for non-delivery, but are difficult to diagnose. Your property calls two line items in an unintended order, causing a lower-priority line item to be selected before the roadblock can compete. Without access to both ad units, the roadblock line item can’t bid on one ad unit.
Action
Consider changing the order of requests on your page, or using Google Publisher Tags with a single-request architecture callout.
In Ad Manager, an ad pod may not return a solution when the minimum pod duration equals the maximum pod duration (min_pod_duration=max_pod_duration). Given the available active line items, no feasible ad pods can be filled to match the publisher’s settings exactly.
Action
Relax the constraints and/or increase the amount of candidates in the auction.
Remove the min_pod_duration or max_pod_duration parameter, or create a gap between min_pod_duration and max_pod_duration parameter values to successfully return an ad pod.
For time specific requirements, try the following:
- Enlarge inventory
- Loosen ad position targeting (if any)
- Lower CPM floor if backfill is enabled
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Your network is required to configure various privacy and consent policy settings related to ad technology used in creatives. In addition, your network must collect consent from users to use this ad technology. Unconfigured or misconfigured settings may prevent a creative from delivering.
Occurs when third-party providers are associated with a creative for Programmatic Guaranteed, Preferred Deal or Reservation line items.
Creatives may not include a reference to third-party ad technology providers (via a pixel or other URL for instance) when the ad request was tagged as non-personalized.
- For Programmatic Guaranteed or Preferred Deal line items this occurs on advertiser-hosted creatives.
- For Reservations, this occurs when you have opted in to "Check reservation creatives for user consent".
Action
For Programatic Guaranteed or Preferred Deal, ask your buyer to remove all third-party references in the creative.
For Reservations, remove all third-party references in the creative.
The creative references unknown ad technology (via a pixel or other URL for instance). Unknown ad technology may be detected because the reference belongs to:
- A third-party ad technology provider, that isn't registered on Google's Ad Tech Providers (ATP) list
- Your network, who has yet to declare the ad technology
Creatives with unknown ad technology won't serve to any ad request within the European Economic Area (EEA) or Brazil, including to ad requests tagged as non-personalized.
Action
- Declare ad technology by entering the URL for any owned ad technology
- Remove unknown ad technology from the creative
- Ask your third-party ad technology provider to register on Google's Ad Tech Providers (ATP) list
In the case of advertiser-hosted Programmatic Guaranteed and Preferred Deal line items, contact the buyer and ask them to remove all unknown ad technology from the creative.
The creative includes a misconfigured macro used for third-party ad technology. These macros are typically used to comply with privacy regulations.
Action
Correct the misconfigured macro. Misconfigured macros could include:
If you're unable to edit the creative to correct the macro yourself, ask your third-party provider to do so.
A personalized ad references a third-party ad technology provider (via a pixel or other URL for instance) and the provider was:
- Not specified in your network’s consent settings.
- Not specified in your network's Consent Management Platform (CMP).
- Specified but is in violation of Google policy.
- Specified but the user didn't provide consent to use the provider.
- The request was tagged for non-personalized treatment explicitly and you have opted in to "Check reservation creatives for user consent".
A user must consent to the use of a particular third-party ad technology provider, and there must be no policy violations with the provider, to show this ad to the user. When you specify the provider in your network's CMP (or your network’s "EU user consent" settings), users have the opportunity to consent (or not) to the use of that provider.
Action
Remove references to the third-party ad technology from the creative. Alternatively, collect consent for users to utilize the provider in the creative by:
Ensure that the provider is aligned with Google policy.
If you've specified the provider in your network's CMP (or your network’s "EU user consent" settings), and the provider is not in violation of Google policy, then the user didn’t provide consent for this provider.
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The Ad Exchange line item may have been selected to deliver but lost because there were no eligible bids—either no bids or every bid was below the floor in
unified pricing rules. The Ad Exchange line item may have also lost due to one of the following reasons:
Action
A blocked advertiser URL in Protections may be another reason this Ad Exchange line item lost. If so, this is likely expected behavior. Blocked URLs are included in your network to help protect your brand and avoid ads from unwanted advertisers. If you suspect one has been included in error, you might review blocked URLs.
Action
- Click See pricing rules to learn which specific unified pricing rules are causing the CPM discrepancy. Consider activating target CPM (if it isn't already) to increase the number of successful auction transactions.
- You may also use the "Pricing rules" card to gain insight on bids and floor prices and then manually adjust floor prices.
Target CPM may occasionally show this reason: Some line items may occasionally experience this issue even if target CPM is activated. This is a normal occurrence as target CPM dynamically adjusts floors prices for optimization.
If enabled for your network, Ad Manager can use traffic shaping to deliver impressions smoothly, relative to the natural traffic fluctuations on your site. Usually, no action is needed.
In some cases, such as when traffic shaping is not enabled for your network, the line item might not be delivering because it's reached the sum of its hourly goals for the day.
Action
Likely none. Traffic shaping is working as expected.
Non-delivery can be a result of the following:
- A correctly functioning competitive exclusion.
- An error in relative priority between two line items. An ad request may result in selecting two eligible line items, but they are requested in an unintended order—causing the delivery of a lower-priority line item before the higher-priority line item can compete.
Action
These actions align with the numbers above:
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Competitive exclusions are typically in place for good reason. However, if they are too strict or misconfigured, they may prevent line items from delivering as intended. There are two ways to set up competitive exclusions. Review protection rules and competitive exclusion labels and update them to avoid unintended ad serving behavior.
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Review the priority of the two line items. Change the order of requests on your webpage, or use Google Publisher Tags with a single-request architecture callout.
Ad Manager optimizes delivery for several factors. For example, use click-through rate (CTR) optimization, Ad Manager which may select a lower-priority line item over a higher-priority line item because of projected click performance. These optimizations are performed within the context of your campaign completion objectives.
Action
Likely none. Optimization is working as intended.
User-level frequency caps are a common reason for a line item to be excluded correctly from competing for a request. This non-delivery cause may mean that a frequency cap on the number of times the creative can be used has been reached.
For Programmatic Guaranteed deals, this message may appear if a buyer doesn’t bid because a frequency cap has been reached.
Action
Check the frequency caps set for this line item and make sure that they’re not overly restrictive.
Restrictions on the number of times a creative can serve to a page imposed by "Display creatives" settings will cause the same creative to not win subsequent requests.
For video line items, frequency caps set up to limit the number of times a creative can serve to a stream or an ad pod may cause this.
Action
Relax restrictions as needed to improve line item delivery.
To get as many of your campaigns as possible to complete, Ad Manager spreads impressions to other campaigns when the line item is on or ahead of the schedule to meet its target.
Action
Likely none. The ad server considers this campaign to be on track to reach its targets.
When two line items are of similar priority, selection is based on likelihood of completion. This non-delivery cause typically means that the line item is operating as expected. You may find that a line item loses more often to line items of the same priority than to line items of a higher priority. This does not necessarily indicate a problem. It likely means that you have many line items of the same priority competing for an ad unit and few line items of a higher priority. You can also see lower priority line items if they were selected for a specific reason, such as optimization.
Action
Use Ad Manager forecasting to check the available inventory and, depending on the numbers, consider updating the line item settings. You might want to expand the targeting, relax frequency caps, prolong the line item’s runtime, and so on.
Remnant line items that compete based on CPM are expected to lose to line items of higher CPM. Behavior is as expected.
Action
If the result is unexpected, review the CPMs you have set for your remnant inventory.
Ad Manager can increase your revenue with dynamic allocation—by selectively giving buyers access to valuable inventory when it won’t impact the likelihood of a campaign completing. This non-delivery cause means that the line item was selected as the winner among reservation line item candidates, but ultimately lost to a remnant line item with a higher CPM.
Action
Likely none. This is expected behavior.
Line item lost because First Look opened up inventory to selected buyers in Ad Exchange.
Action
Change First Look pricing rules as needed.
Sequential rotation stops working correctly if any creative set to rotate can’t serve to the impression. When the next creative in the sequence is unable to fill an ad slot, the line item stops serving until the next time period begins.
Action
Troubleshoot some of the more common issues related to creative rotation.
Ad Manager called out to another ad server to fetch the creative and didn’t get a response. The ad server could be Campaign Manager or a third-party network.
Action
Check that the creative information in Ad Manager and the ad server is correct and consistent.
The buyer is bidding with a creative that contains attributes you've disallowed, such as VPAID, remarketing ads, or in-banner video.
Action
Contact the buyer.
Includes all ad requests filled by demand sources that are not exposed in the troubleshooting tool. This can include ad requests from other line items, Ad Exchange, and so on.
Action
Likely none. You can use the Ad request simulator (for desktop, mobile web, app, or video) to see all line items competing for an ad request. At times, a buyer may bid with creatives in a restricted category (such as alcohol or gambling) that cannot serve. In these cases, you can update your restricted category opt-ins via Protections. Please note that these creatives may not be eligible to serve due to their region, regardless of your restrictive category opt-ins.
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The bid is filtered because it doesn't match the format of the chosen deal.
Action
Buyers need to resolve this issue. If you want to contact buyers so they’re aware, reference this Authorized Buyers Help Center article.
Before an ad can be shown, the landing page URL needs to be crawled and reviewed by Google.
When a creative ID is labeled “Unknown”, Google has not logged the creative ID for the filtered bids yet. This process may take up to a few hours to complete, after which the corresponding creative ID will be displayed.
Action
Buyers need to resolve this issue. If you want to contact buyers so they’re aware, reference this Authorized Buyers Help Center article.
The bid is filtered because the creative was not approved. If the ad doesn't comply with Authorized Buyers policies, the ad will be disapproved, and then filtered from the auction.
Action
Buyers need to resolve this issue. If you want to contact buyers so they’re aware, reference this Authorized Buyers Help Center article.
The bid is filtered by Google because the declared width and height in the bid response do not match the bid request.
Action
Buyers need to resolve this issue. If you want to contact buyers so they’re aware, reference this Authorized Buyers Help Center article.
The video was filtered because it has historically had a high error rate or very low view rate. Video ad filtering prevents problematic video ads from competing in the auction.
Action
Buyers need to resolve this issue. If you want to contact buyers so they’re aware, reference this Authorized Buyers Help Center article.
The ad has been deemed inappropriate for children due to one of the following:
- Content rating
- The associated general and/or sensitive categories
- It’s not classified in a general and/or sensitive category
Action
Change the targeting to avoid child requests and/or contact the buyer to adjust their creatives.
An authorized buyer sent a bid response that is not supported with publisher-managed creatives.
Action
Please contact the buyer.
A Preferred Deal is targeting inventory with an overlapping Ad Exchange line item targeted to a linked (such as, not owned or mapped) web property and/or an overlapping AdSense line item. The conflict in web properties prevents completing the backfill request.
Action
Try one of the following:
- Remove the overlap by updating targeting for the Preferred Deal and/or the overlapping Ad Exchange/AdSense line items.
- Remove the linked web properties and transact programmatically only through the mapped/owned web properties.
- Do nothing and accept a certain amount of ineligibility if/when this conflict occurs.
Your line item didn’t deliver for one of the following reasons:
- A native-only Ad Exchange line item or yield group was matched, and the Preferred Deal isn’t targeting native.
- A non-native Ad Exchange line item or yield group was matched, and the Preferred Deal only targets native.
Action
Try one of the following:
- Update the “Expected creatives” setting of overlapping Ad Exchange line items to All requested sizes. Generate a new creative that contains all sizes and deactivate any other active associated creatives.
- Do nothing and accept a certain amount of ineligibility if/when this conflict occurs.
This non-delivery cause is typically associated with Programmatic Direct line items.
- If this is a Programmatic Guaranteed deal, the
must_bid signal is true, which means buyers are required to bid on a request. This is because, at the time, Ad Manager determined the impression was needed to help get the deal well ahead of schedule toward achieving its goal. Low response rate from the buyer can cause line items to underdeliver. Reasons for low or no responses include:
- The buyer isn't interested in this inventory.
- The buyer has paused the creative.
- The creative is currently pending approval.
- If this is a Preferred Deal, the buyer isn’t required to bid on the request.
Action
- For Programmatic Guaranteed deals: Contact the buyer to understand their low response rate. Google is often unable to obtain insight into low response rates, and the buyer is in a better position to provide details.
- For Preferred Deals: No action is needed.
This non-delivery cause is typically associated with Programmatic Direct line items. The must_bid signal is false, which means the buyer has the option to not bid on a request. This is because, at the time, Ad Manager determined the impression wasn’t needed to keep the deal well ahead of schedule toward achieving its goal. Not bidding on this request shouldn’t cause underdelivery.
Action
No action is needed. This is working as expected and doesn’t affect reaching the deal’s goal.
Your ads.txt doesn't reflect the domains that you're authorized to sell, or the URL is in violation of Google Ad Manager Partner Guidelines.
Action
Good to know about URLs and Google's content policies
In some cases, the URL may be allowed under Google Ad Manager Partner Guidelines but related traffic or content may be considered invalid due to spam protection or other issues. In these scenarios, you'll continue to see this non-delivery cause, even if you complete the suggested actions.
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Exchanges need to return a bid within a specified amount of time to compete in the auction. Bids not returned quickly enough aren't included in the unified auction.
Action
Contact your exchange partner.
Other line items in Ad Manager had a higher rate than the best exchange bid.
Action
Likely none. This is expected behavior.
Another exchange's bid won the unified auction.
Action
Likely none. This is expected behavior.
An exchange's bid might not be allowed in an auction that includes a direct deal, First Look, or similar competitor.
Action
Likely none. This is expected behavior.
An error in the bid response, such as the bidder host returning unknown status, can block delivery.
Action
Contact your exchange partner.
If Ad Manager detects malware in a buyer's creative, the creative isn't allowed to serve.
Action
Contact your exchange partner.
If Ad Manager detects an issue in a buyer's creative, such as the creative isn't allowed to serve. Common issues include:
- Response sizes do not match request sizes
- Response is missing mandatory fields
- Response contains not yet reviewed creatives
Action
Contact your exchange partner.
Exchange partners aren't required to bid for every request. This non-delivery cause reflects requests where the exchange partner explicitly declined a bid request.
Action
Contact your exchange partner.
The exchange has not been allowed to transact deals through Open Bidding.
Action
Contact your exchange partner and consider allowing third-party deal bids in Open Bidding.
The targeting defined in the exchange's system (known as "pretargeting") was not compatible with the publisher's yield group targeting.
Action
Contact your exchange partner.
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This is often caused by your buyer bidding with a VPAID creative on inventory where VPAID is not eligible.
Action
Work with your buyer to upload a valid video creative type.
The creative runs longer than the specified max ad duration.
Action
Update your max ad duration settings or work with your buyer to upload a shorter creative.
The skippable settings for your deal and the buyer’s creative need to match.
Action
Update your deal's skippability settings or work with your buyer to upload a valid creative.
Your buyer's creative is invalid.
Action
Work with your buyer to upload a valid creative for this deal.
The video ad couldn't serve because it was too long for the pod.
Action
Consider longer pods or shorter creatives for this line item.
The video ad couldn't serve because position targeting couldn't be matched.
Action
Consider targeting more video pod positions for this line item.
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