> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v23** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/CustomConversionGoalErrorEnum.CustomConversionGoalError).

Enum describing possible custom conversion goal errors.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/errors/custom_conversion_goal_error.proto)

| Enums ||
|---|---|
| ## `CANNOT_REMOVE_LINKED_CUSTOM_CONVERSION_GOAL` | The custom conversion goal cannot be removed because it's linked to a campaign. |
| ## `CONVERSION_ACTION_NOT_ENABLED` | The conversion action is not enabled so it cannot be included in a custom conversion goal. |
| ## `CUSTOM_GOAL_DUPLICATE_NAME` | Custom goal with the same name already exists. |
| ## `DUPLICATE_CONVERSION_ACTION_LIST` | Custom goal with the same conversion action list already exists. |
| ## `INVALID_CONVERSION_ACTION` | Cannot find a conversion action with the specified id. |
| ## `NON_BIDDABLE_CONVERSION_ACTION_NOT_ELIGIBLE_FOR_CUSTOM_GOAL` | Conversion types that cannot be biddable should not be included in custom goal. |
| ## `UNKNOWN` | The received error code is not known in this version. |
| ## `UNSPECIFIED` | Enum unspecified. |