AI-generated Key Takeaways
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          This document describes the response message for mutating ad group criterion labels. 
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          The response includes fields for partial_failure_errorandresults.
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          partial_failure_errorprovides details on operation failures in partial failure mode.
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          resultscontains all the results for the mutate operation.
Response message for an ad group criterion labels mutate.
| Fields | |
|---|---|
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 | Errors that pertain to operation failures in the partial failure mode. Returned only when partial_failure = true and all errors occur inside the operations. If any errors occur outside the operations (for example, auth errors), we return an RPC level error. | 
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 All results for the mutate. |