Page Summary
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The AdUnitHierarchyError is caused by creating an AdUnit object with an invalid hierarchy within the InventoryService.
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This error inherits from ApiError and includes specific fields like fieldPath, fieldPathElements, trigger, and errorString.
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The AdUnitHierarchyError has a 'reason' field which can indicate an INVALID_DEPTH if the ad unit hierarchy is too deep or an INVALID_PARENT if the parent ad unit is invalid for the account type.
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The maximum allowed depth for ad units is two below the effective root for Ad Manager 360 accounts and one level for Ad Manager accounts.
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The only valid parent for an Ad Manager account is the Network.effectiveRootAdUnitId.
Caused by creating an AdUnit object with an invalid hierarchy.
- Namespace
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https://www.google.com/apis/ads/publisher/v202508
Field
ApiError
(inherited) fieldPath
xsd:
string
The OGNL field path to identify cause of error.
fieldPathElements
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.
AdUnitHierarchyError
reason
Enumerations
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INVALID_DEPTH - The depth of the AdUnit in the inventory hierarchy is greater than is allowed. The maximum allowed depth is two below the effective root ad unit for Ad Manager 360 accounts and is one level below the effective root ad unit for Ad Manager accounts.
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INVALID_PARENT - The only valid AdUnit.parentId for an Ad Manager account is the Network.effectiveRootAdUnitId , Ad Manager 360 accounts can specify an ad unit hierarchy with more than two levels.
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UNKNOWN - The value returned if the actual value is not exposed by the requested API version.

