AttributionModel

The attribution model that describes how to distribute credit for a particular conversion across potentially many prior interactions.

Enums
`EXTERNAL`	Uses external attribution.
`GOOGLE_ADS_LAST_CLICK`	Attributes all credit for a conversion to its last click.
`GOOGLE_SEARCH_ATTRIBUTION_DATA_DRIVEN`	Flexible model that uses machine learning to determine the appropriate distribution of credit among clicks using Google Search attribution.
`GOOGLE_SEARCH_ATTRIBUTION_FIRST_CLICK`	Attributes all credit for a conversion to its first click using Google Search attribution.
`GOOGLE_SEARCH_ATTRIBUTION_LINEAR`	Attributes credit for a conversion equally across all of its clicks using Google Search attribution.
`GOOGLE_SEARCH_ATTRIBUTION_POSITION_BASED`	Attributes 40% of the credit for a conversion to its first and last clicks. Remaining 20% is evenly distributed across all other clicks. This uses Google Search attribution.
`GOOGLE_SEARCH_ATTRIBUTION_TIME_DECAY`	Attributes exponentially more credit for a conversion to its more recent clicks using Google Search attribution (half-life is 1 week).
`UNKNOWN`	Used for return value only. Represents value unknown in this version.
`UNSPECIFIED`	Not specified.

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Last updated 2025-12-12 UTC.

`EXTERNAL`