type EntityChildrenLimitReachedError (v202505)
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AI-generated Key Takeaways
EntityChildrenLimitReachedError is an error in the Ad Manager API that occurs when an entity, such as an order or line item, exceeds the maximum allowed number of child entities.
This error can manifest in various scenarios, including exceeding the limit on line items per order, creative associations per line item, ad units per placement, or targeting expressions per line item.
The error also applies to exceeding limits on custom targeting values, attachments or proposal line items per proposal, products per product package, rates per rate card, and native styles per native ad format.
The reason field provides specific details about which limit has been reached, offering values like LINE_ITEM_LIMIT_FOR_ORDER_REACHED, CREATIVE_ASSOCIATION_LIMIT_FOR_LINE_ITEM_REACHED, and others to pinpoint the exact 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-06 UTC."],[],[]]