Enum describing possible conversion action errors.

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

| Enums ||
|---|---|
| ## `BIDDING_ON_SAME_APP_DOWNLOAD_AS_GLOBAL_ACTION` | Android first open action conflicts with Google play codeless download action tracking the same app. |
| ## `CANNOT_SET_RULE_BASED_ATTRIBUTION_MODELS` | Rule-based attribution models are deprecated and not allowed to be set by conversion action. |
| ## `CREATION_NOT_SUPPORTED` | Creation of this conversion action type isn't supported by Google Ads API. |
| ## `DATA_DRIVEN_MODEL_EXPIRED` | The attribution model cannot be set to DATA_DRIVEN because the data-driven model is expired. |
| ## `DATA_DRIVEN_MODEL_STALE` | The attribution model cannot be set to DATA_DRIVEN because the data-driven model is stale. |
| ## `DATA_DRIVEN_MODEL_UNKNOWN` | The attribution model cannot be set to DATA_DRIVEN because the data-driven model is unavailable or the conversion action was newly added. |
| ## `DATA_DRIVEN_MODEL_WAS_NEVER_GENERATED` | The attribution model cannot be set to DATA_DRIVEN because a data-driven model has never been generated. |
| ## `DUPLICATE_APP_ID` | Another conversion action with the specified app id already exists. |
| ## `DUPLICATE_NAME` | The specified conversion action name already exists. |
| ## `TWO_CONVERSION_ACTIONS_BIDDING_ON_SAME_APP_DOWNLOAD` | Android first open action conflicts with Google play codeless download action tracking the same app. |
| ## `UNKNOWN` | The received error code is not known in this version. |
| ## `UNSPECIFIED` | Enum unspecified. |
| ## `UPDATE_NOT_SUPPORTED` | Update of this conversion action isn't supported by Google Ads API. |