Request Delivery Estimate V2

Use this API to request delivery estimates or winning impressions forecast for a given ad group

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What It Does:

  • Predicts delivery performance of an ad group using its configured schedule, targeting, budget, and bid.
    Allows developers to simulate changes to ad group configuration by overriding fields in the request payload.
  • Does not modify any stored ad group or campaign data — simulation is used solely for forecasting purposes.
  • To return a valid delivery estimate, the following ad group-level attributes must be available either in the stored ad group OR passed in the request: schedule, budget, bid and targeting. If any of the four are missing in the ad group and not provided in the request payload, the API returns an error.

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Simulation (“What-If” analysis) support

  • You can override ad group-level startDate, endDate, baseBid,maxBid, frequencyCap, dailyBudget, totalBudget, deliverySpeed and targeting in the request body to simulate changes without modifying the actual ad group.
  • Campaign-level schedules, budget & deliverySpeed that cascade to ad groups cannot yet be simulated in this API. If budget, schedule and deliverySpeed are set at the campaign level, the API will disregard these values if passed, and the forecast provided will use the original campaign values instead.
  • All overrides are non-persistent. This API does not modify stored campaign or ad group data.

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URL: POST/api/v2/deliveryEstimate


Request Parameters

ParametersNotesTypeRequiredPossible Values
advertiserIdID of advertiser integerYUnique numeric identifier
campaignIdID of the campaign containing the ad groupintegerYValid campaign ID
adGroupIdID the ad group to forecastintegerYValid ad group ID
metricThe list of metrics you are requesting an estimate for.arrayYValues:

  • impressions
  • clicks
  • adSpend
  • orders
timeFramesSpecifies the timeframes for which forecasts should be returned. If not provided, forecasts for all available timeframes will be returned.arrayNValues:

  • daily
  • 30days
  • lifetime
startDateSimulated start date for ad group schedulingstringConditional*Required if not set at ad group level.

Date must follow this format:
yyyy-MM-dd'T'HH:mm:ss.SSSXXX

Note:
  • All timestamp values must be in ISO 8601 format (e.g., "2025-07-20T19:10:10-05:00").
  • All date-time values are internally converted to Eastern Time (ET) for processing and normalized to the start of the hour. This means minutes and seconds are truncated. Example: "2025-07-20T19:10:10-05:00" becomes "2025-07-20T19:00:00-05:00" in ET

Kindly take these behaviors into consideration when assigning a value to startDate in your request.
endDateSimulated start date for ad group scheduling. For ad groups that run indefinitely, use the value:
endDate = ‘9999-12-30T00:00:00Z’
stringConditional*Required if not set at ad group level.

Date must follow this format:
yyyy-MM-dd'T'HH:mm:ss.SSSXXX

Note:
  • All timestamp values must be in ISO 8601 format (e.g., "2025-07-20T19:10:10-05:00").
  • All date-time values are internally converted to Eastern Time (ET) for processing and normalized to the start of the hour. This means minutes and seconds are truncated. Example: "2025-07-20T19:10:10-05:00" becomes "2025-07-20T19:00:00-05:00" in ET
  • The endDate must be set to a time after 12:00 PM ET. If the provided value is before 12:00 PM ET, the system will return an error.
  • Special Case: If you set endDate to exactly "00:00:00" ET (e.g., "2025-07-20T00:00:00-05:00"), it will be interpreted as the end of the previous day: "2025-07-19T23:59:59-05:00".

Kindly take these behaviors into consideration when assigning a value to startDate in your request.
targetingA nested array element with following elements:
  • keywords: ONLY APPLICABLE FOR KEYWORD TARGETING
    • keywordText: string data type
    • matchType: string data type Values: broad, exact
  • Note: only Exact match type is allowed for negative keywords

    • contexual: ONLY APPLICABLE FOR CONTEXTUAL TARGETING
      • id: integer data type
      • reach: string data type Values: "tier_1", "tier_2", "tier_3", "tier_4", "tier_5", "tier_6", "tier_7"

    Note: This is how tiers in API call map to the representation on ad center UI: Tier mapping: low = [tier_1, tier_2], mid = [tier_3, tier_4], high = [tier_5, tier_6, tier_7]

    • behavioral: ONLY APPLICABLE FOR BEHAVIORAL TARGETING
      • audienceType: string data type Values:
        • retail
        • brand
        • persona
        • custom
      • attribute: string data type Values:
        • For category:
          • historical
          • predictive
        • For brand:
          • historical
          • predictive
          • lapsed_buyers
        • For persona:
          • lifestyle
          • lifestage
      • id:integer data type
    • runOfSite ONLY APPLICABLE FOR ROS TARGETING:
      string data type, Value: true
    • geoTargets
      • id: integer data type

        Note:
        1. If Geo targeting is not specified, the default Country (US) level targeting will be applied
        2. IDs with isDisabled = true from POST/api/v1/targeting/list cannot be used for targeting
objectConditional*The values:
• keywords
• contextual
• behavioral
• runOfSite
• geoTargets
maxBidSimulated maximum bid value for the ad groupdoubleConditional*Value of max bid. It Must be >=$0.01
baseBidSimulated starting bid for the ad groupdoubleConditional*Value of base bid. Value of base bid. It Must be >=$0.01
frequencyCapDayThe number of times the ad from specific ad group should be shown to the same user in a dayintegerNInteger values between 1 and 511
frequencyCapWeekThe number of times the ad from specific ad group should be shown to the same user in a weekintegerNInteger values between 3 and 511
frequencyCapMonthThe number of times the ad from specific ad group should be shown to the same user in a monthintegerNInteger values between 5 and 511
dailyBudgetSimulated daily budget of the ad groupdoubleConditional*The value of daily budget should at least be $0.01
totalBudgetSimulated total budget of ad groupdoubleConditional*The value of total budget should at least be $0.01
deliverySpeedDetermines pacing of ad delivery.doubleConditional*Values:
  • frontloaded
  • evenly

*Conditional - required if not configured for the adGroupId

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Rules

  • To return a valid delivery estimate, the following ad group-level attributes must be available either in the stored ad group OR passed in the request: startDate, endDate, dailyBudget or totalBudget, maxBid and targeting. If any of these are missing in the ad group and not provided in the request payload, the API returns an error.
  • If the following request parameters are set at the campaign level: startDate, endDate, dailyBudget, totalBudget, deliverySpeed, the values for these parameters in the request payload are disregarded and the forecast response uses the original campaign values instead.
  • If the following request parameters are set at the ad group level: startDate, endDate, dailyBudget, totalBudget, deliverySpeed, baseBid, maxBid, frequencyCapDay, frequencyCapWeek, frequencyCapMonth, targeting, the values provided for these parameters in the request payload override the original values set at ad group level and are used in the forecast response instead
  • To get orders forecast, the campaign should have a built featured itemset associated to it
  • Users can simulate changes by overriding ad group-level settings in the request payload. The API does not modify any stored data. Note: Currently, the API supports simulation only for ad group-level attributes. Campaign-level budgets or schedules that apply to ad groups are not yet supported for simulation.
  • You must set all of budgetType, dailyBudget, totalBudget, startDate, endDate, and deliverySpeed parameters at same level i.e. either at campaign level or ad group level, not both
  • If startDate, endDate, budgetType, dailyBudget, totalBudget, deliverySpeed are omitted, they must be defined at the ad group level
  • You can only set either dailyBudget or totalBudget
  • To set daily budget, you must choose value of budgetType as “daily” and then define dailyBudget.
  • To set total budget, you must choose value of budgetType as “total” and then define totalBudget.
  • Budget, Schedule and Delivery speed must be set either at campaign or ad group level
  • If timeFrames not provided in the request, API returns delivery estimate for all the three timeframes
  • For partial Response in orders data , API will return 206 response code

Sample Request - Get impression, clicks ,ad spend and orders forecasts for an ad group with updated values for schedule, targeting, bid, budget and frequency caps

curl --location --request POST 'https://developer.api.us.walmart.com/api-proxy/service/display/api/v1/api/v2/deliveryEstimate' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer <auth_token>' \
--header 'WM_SEC.AUTH_SIGNATURE: ***********' \
--header 'WM_CONSUMER.ID: abcde-v123-fa2r-a1fs-asd45f6qef' \
--header 'WM_SEC.KEY_VERSION: 1' \
--header 'WM_CONSUMER.intimestamp: 1565309779' \
--data '
{ "advertiserId": 1, "campaignId": 9, "adGroupId": 2, "metric": [ "impressions","clicks","adSpend","orders" ], "timeframes":["daily","30days","lifetime"], "startDate": "2024-06-27T00:00:00Z", "endDate": "2024-12-30T23:59:59Z", "targeting": { "and": [ { "runOfSite": true }, { "geoTargets": [ { "id": 1 } ] } ] }, "maxBid": 10, "baseBid": 2, "frequencyCapDay": 50, "frequencyCapWeek": 50, "frequencyCapMonth": 50, "dailyBudget": 100, "deliverySpeed": "evenly" }' 

Sample Request - Get impression, clicks ,ad spend and orders forecasts for an ad group in a campaign that does not have a featured itemset associated

curl --location --request POST 'https://developer.api.us.walmart.com/api-proxy/service/display/api/v1/api/v2/deliveryEstimate' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer <auth_token>' \
--header 'WM_SEC.AUTH_SIGNATURE: ***********' \
--header 'WM_CONSUMER.ID: abcde-v123-fa2r-a1fs-asd45f6qef' \
--header 'WM_SEC.KEY_VERSION: 1' \
--header 'WM_CONSUMER.intimestamp: 1565309779' \
--data '{ "advertiserId": 1, "campaignId": 9, "adGroupId": 2, "metric": [ "impressions","clicks","adSpend","orders" ], "timeframes":["daily","30days","lifetime"] }' 

Response

ElementDescriptionType
codeThe response code can have following values:
  • success
  • failure
string
forecastIdforecastId for every successful responsestring
estimatesContains forecasted metrics over various time ranges. It is a nested json object that contains forecast data for impressions, clicks, ordersand adSpend.
The estimates objects are detailed below in a separate table following this one.
json
detailsDetails of the response.
Values:
  • REACH_ESTIMATE_SUCCESS
  • REACH_ESTIMATE_FAILURE
json
errorsdetails when there is partial responsearray

estimates Objects:

each metrics ( impressions, clicks, and adSpend ) is structured as follows:

ElementsDescriptionType
dailyEstimated metric values per dayjson
30daysEstimated metric values for 30 daysjson
lifetimeEstimated metric values for the ad group's full lifetimejson

each sub-object (daily, 30days, lifetime) contains:

ElementsDescriptionType
minValueLower bound of the estimated metric rangeint
maxValueUpper bound of the estimated metric range
Note: This field is omitted when there is no defined upper bound for the estimate
int

Delivery Estimate Success Response - Get impression, clicks ,ad spend and orders forecasts for an ad group with updated values for schedule, targeting, bid, budget and frequency caps

{ "code": "success", "forecastId": "567", "estimates": { "impressions": { "daily": { "minValue": 1, "maxValue": 2 }, "30days": { "minValue": 1, "maxValue": 2 }, "lifetime": { "minValue": 1, "maxValue": 2 } }, "clicks": { "daily": { "minValue": 3, "maxValue": 4 }, "30days": { "minValue": 1, "maxValue": 2 }, "lifetime": { "minValue": 3, "maxValue": 4 } }, "adSpend": { "daily": { "minValue": 5, "maxValue": 7 }, "30days": { "minValue": 2, "maxValue": 3 }, "lifetime": { "minValue": 5, "maxValue": 7 } }, "orders": { "daily": { "minValue": 100, "maxValue": 400 }, "30days": { "minValue": 6200, "maxValue": 7900 }, "lifetime": { "minValue": 42000, "maxValue": 50000 } } }, "details": [ "DELIVERY_ESTIMATE_SUCCESS" ]
} 

Delivery Estimate Success Response - Get impression, clicks ,ad spend and orders forecasts for an ad group with updated values for schedule, targeting, bid, budget and frequency caps

{ "code": "failure", "details": [ "string" ]
}

Delivery Estimate Partial Success Response - Get impression, clicks ,ad spend and orders forecasts for an ad group in a campaign that does not have a featured itemset associated

206- partial success { "code": "partial_response", "forecastId": "567", "estimates": { "impressions": { "daily": { "minValue": 1, "maxValue": 2 }, "30days": { "minValue": 1, "maxValue": 2 }, "lifetime": { "minValue": 1, "maxValue": 2 } }, "clicks": { "daily": { "minValue": 3, "maxValue": 4 }, "30days": { "minValue": 1, "maxValue": 2 }, "lifetime": { "minValue": 3, "maxValue": 4 } }, "adSpend": { "daily": { "minValue": 5, "maxValue": 7 }, "30days": { "minValue": 2, "maxValue": 3 }, "lifetime": { "minValue": 5, "maxValue": 7 } }, "orders": { "daily": { "minValue": -1, "maxValue": -1 }, "30days": { "minValue": -1, "maxValue": -1 }, "lifetime": { "minValue": -1, "maxValue": -1 } } }, "errors": [ "ITEMSETID_IS_REQUIRED_FOR_ORDERS_METRICS" ]
}

Delivery Estimate Failure Response - Get impression, clicks ,ad spend and orders forecasts for an ad group in a campaign that does not have a featured itemset associated

{ "code": "failure", "details": [ "string" ]
}