> [!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/GoalErrorEnum.GoalError).

Enum describing possible 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/goal_error.proto)

| Enums ||
|---|---|
| ## `CUSTOMER_LIFECYCLE_OPTIMIZATION_ACCOUNT_TYPE_NOT_ALLOWED` | Only Google Ads account can have customer lifecycle optimization goal. |
| ## `HIGH_LIFETIME_VALUE_LESS_THAN_OR_EQUAL_TO_VALUE` | When using customer lifecycle optimization goal, high lifetime value should be greater than value. |
| ## `HIGH_LIFETIME_VALUE_PRESENT_BUT_VALUE_ABSENT` | When using customer lifecycle optimization goal, if high lifetime value is present then value should be present. |
| ## `RETENTION_GOAL_ALREADY_EXISTS` | Retention goal already exists. |
| ## `UNKNOWN` | The received error code is not known in this version. |
| ## `UNSPECIFIED` | Enum unspecified. |