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AI-generated Key Takeaways
EntityChildrenLimitReachedError is an error type that occurs when an entity has too many children.
This error can manifest in various scenarios such as exceeding the maximum number of line items on an order, creatives associated with a line item, or ad units on a placement.
The error also applies to limits on targeting expressions, custom targeting values, attachments to proposals, and items on product packages and rate cards.
Several other Google Ad Manager services can also return the EntityChildrenLimitReachedError, including AudienceSegmentService, CustomTargetingService, and ForecastService.
The ApiError parent class provides fields like fieldPath and trigger to help identify the cause of the error.
A parsed copy of the field path. For example, the field path "operations[1].operand"
corresponds to this list: {FieldPathElement(field = "operations", index = 1),
FieldPathElement(field = "operand", index = null)}.
trigger
xsd:string
The data that caused the error.
errorString
xsd:string
A simple string representation of the error and reason.
The number of product template and product base rates on the rate card (including excluded
product base rates) exceeds the max number allowed per rate card in the network.
The number of ad units on AdExclusionRule.inventoryTargeting exceeds the max number
of ad units allowed per ad exclusion rule inventory targeting in the network.
NATIVE_STYLE_LIMIT_FOR_NATIVE_AD_FORMAT_REACHED
The number of native styles under the native creative template exceeds the
max number of native styles allowed per native creative template in the
network.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-13 UTC."],[],[]]