experiment_arm
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AI-generated Key Takeaways
A Google Ads experiment allows users to test changes across campaigns, compare performance, and apply effective adjustments.
Fields from customer and experiment resources can be selected along with experiment_arm fields in queries, but they will not segment metrics.
The experiment_arm resource includes fields such as campaigns, control status, associated experiment, in-design campaigns, name, resource name, and traffic split.
The experiment_arm.campaigns field lists the campaigns in a trial arm with a maximum length of one.
The experiment_arm.control field indicates if an arm is the control arm used for comparison.
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.campaigns
Field description
List of campaigns in the trial arm. The max length is one.
Category
ATTRIBUTE
Data Type
RESOURCE_NAME
Type URL
N/A
Filterable
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
ATTRIBUTE
Data Type
BOOLEAN
Type URL
N/A
Filterable
True
Selectable
True
Sortable
True
Repeated
False
experiment_arm.experiment
Field description
Immutable. The experiment to which the ExperimentArm belongs.
Category
ATTRIBUTE
Data Type
RESOURCE_NAME
Type URL
N/A
Filterable
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
ATTRIBUTE
Data Type
RESOURCE_NAME
Type URL
N/A
Filterable
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
ATTRIBUTE
Data Type
STRING
Type URL
N/A
Filterable
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
ATTRIBUTE
Data Type
RESOURCE_NAME
Type URL
N/A
Filterable
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.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-10-16 UTC."],[],[]]
