The AdWords API will sunset on April 27, 2022. Migrate to the Google Ads API to take advantage of the latest Google Ads features.

enum BiddingStrategyError.Reason (v201809)

Enumeration Description
DUPLICATE_NAME Each bidding strategy must have a unique name.
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.
BIDDING_STRATEGY_NOT_SUPPORTED The specified bidding strategy is not supported.