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experiment_arm
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Proto definition A Google ads experiment for users to experiment changes on multiple
campaigns, compare the performance, and apply the effective changes.
Fields from the above resources may be selected along with this
resource in your SELECT and WHERE clauses. These fields will not segment
metrics in your SELECT clause.
experiment_arm.asset_groups.asset_group
Field description Asset group resource name.
Category ATTRIBUTEData Type RESOURCE_NAMEType URL N/AFilterable True Selectable False Sortable False Repeated False
experiment_arm.asset_groups.asset_group_assets.asset
Field description Asset resource name of the asset group asset.
Category ATTRIBUTEData Type RESOURCE_NAMEType URL N/AFilterable True Selectable False Sortable False Repeated False
experiment_arm.asset_testing_info.asset_variation_infos.asset_details.asset
Field description The asset that is being modified for the experiment.
Category ATTRIBUTEData Type RESOURCE_NAMEType URL N/AFilterable True Selectable False Sortable False Repeated False
experiment_arm.asset_testing_info.asset_variation_infos.base_ad
Field description Associated base ad resource name.
Category ATTRIBUTEData Type RESOURCE_NAMEType URL N/AFilterable True Selectable False Sortable False Repeated False
experiment_arm.asset_testing_info.asset_variation_infos.base_ad_group
Field description Associated base AdGroup resource name.
Category ATTRIBUTEData Type RESOURCE_NAMEType URL N/AFilterable True Selectable False Sortable False Repeated False
experiment_arm.campaigns
Field description List of campaigns in the trial arm. The max length is one.
Category ATTRIBUTEData Type RESOURCE_NAMEType URL N/AFilterable True Selectable True Sortable False Repeated True
experiment_arm.control
Field description Whether this arm is a control arm. A control arm is the arm against
which the other arms are compared.
Category ATTRIBUTEData Type BOOLEANType URL N/AFilterable True Selectable True Sortable True Repeated False
experiment_arm.experiment
Field description Immutable. The experiment to which the ExperimentArm belongs.
Category ATTRIBUTEData Type RESOURCE_NAMEType URL N/AFilterable True Selectable True Sortable False Repeated False
experiment_arm.in_design_campaigns
Field description Output only. The in design campaigns in the treatment experiment arm.
Category ATTRIBUTEData Type RESOURCE_NAMEType URL N/AFilterable True Selectable True Sortable False Repeated True
experiment_arm.name
Field description Required. The name of the experiment arm. It must have a minimum length of
1 and maximum length of 1024. It must be unique under an experiment.
Category ATTRIBUTEData Type STRINGType URL N/AFilterable True Selectable True Sortable True Repeated False
experiment_arm.resource_name
Field description Immutable. The resource name of the experiment arm.
Experiment arm resource names have the form:
customers/{customer_id}/experimentArms/{TrialArm.trial_id}~{TrialArm.trial_arm_id}
Category ATTRIBUTEData Type RESOURCE_NAMEType URL N/AFilterable True Selectable True Sortable False Repeated False
experiment_arm.traffic_split
Field description Traffic split of the trial arm. The value should be between 1 and 100
and must total 100 between the two trial arms.
Category ATTRIBUTEData Type INT64Type URL N/AFilterable True Selectable True Sortable False Repeated False
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Last updated 2026-05-28 UTC.
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