> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/BiddingStrategyErrorEnum.BiddingStrategyError).

Enum describing possible bidding strategy errors.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/errors/bidding_strategy_error.proto)

| Enums ||
|---|---|
| ## `BIDDING_STRATEGY_NOT_SUPPORTED` | The specified bidding strategy is not supported. |
| ## `CANNOT_CHANGE_BIDDING_STRATEGY_TYPE` | Bidding strategy type is immutable. |
| ## `CANNOT_REMOVE_ASSOCIATED_STRATEGY` | Only bidding strategies not linked to campaigns, adgroups or adgroup criteria can be removed. |
| ## `DUPLICATE_NAME` | Each bidding strategy must have a unique name. |
| ## `INCOMPATIBLE_BIDDING_STRATEGY_AND_BIDDING_STRATEGY_GOAL_TYPE` | The bidding strategy is incompatible with the campaign's bidding strategy goal type. |
| ## `UNKNOWN` | The received error code is not known in this version. |
| ## `UNSPECIFIED` | Enum unspecified. |