The different actions advertisers can take to adjust the conversions that they already reported. Retractions negate a conversion. Restatements change the value of a conversion.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/enums/conversion_adjustment_type.proto)

| Enums ||
|---|---|
| ## `ENHANCEMENT` | Supplements an existing conversion with provided user identifiers and user agent, which can be used by Google to enhance the conversion count. |
| ## `RESTATEMENT` | Changes the value of a conversion. |
| ## `RETRACTION` | Negates a conversion so that its total value and count are both zero. |
| ## `UNKNOWN` | Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |