Update: We have edited this post to add more details about the reporting bug and list affected fields in the AdWords API and Google Ads API beta.

On Nov 20 at approximately 9pm PST, a bug caused Google Ads Search and Shopping conversions occurring between Nov 11 12:01 AM PST and Nov 20 11:59 PM PST to be overreported for advertisers using non-last click attribution models. This bug impacts reports in all Google Ads interfaces, including any report data downloaded via the AdWords API, Google Ads API and Google Ads Scripts. Google Ads bid strategies are not impacted by this issue.

The following reporting fields are affected in the AdWords API and Google Ads API beta. Google Ads scripts that reference the AdWords API fields below and any derivative custom columns based upon these metrics may also be affected.

AdWords API

Google Ads API beta

Conversions ConversionValue ConversionRate ValuePerConversion CostPerConversion AllConversions AllConversionValue AllConversionRate ValuePerAllConversion CostPerAllConversion CurrentModelAttributedConversions CurrentModelAttributedConversionValue ValuePerCurrentModelAttributedConversion CostPerCurrentModelAttributedConversion

metrics.all_conversions metrics.all_conversions_from_click_to_call metrics.all_conversions_from_interactions_rate metrics.all_conversions_from_interactions_value_per_interaction metrics.all_conversions_value metrics.all_conversions_value_per_cost metrics.conversions metrics.conversions_from_interactions_rate metrics.conversions_from_interactions_value_per_interaction metrics.conversions_value metrics.conversions_value_per_cost metrics.cost_per_all_conversions metrics.cost_per_conversion metrics.cost_per_current_model_attributed_conversion metrics.cross_device_conversions metrics.current_model_attributed_conversions metrics.current_model_attributed_conversions_from_interactions_rate metrics.current_model_attributed_conversions_from_interactions_value_per_interaction metrics.current_model_attributed_conversions_value metrics.current_model_attributed_conversions_value_per_cost metrics.value_per_all_conversions metrics.value_per_conversion metrics.value_per_current_model_attributed_conversion

We are actively working on fixing the bug and correcting the conversion data.

We appreciate your patience as we work to resolve this issue as quickly as possible.
--Stan Grinberg, Google Ads API Team

Source: Google Ads Developer Blog