Hi Daniel,
Thanks for reaching out. In the AdWords API, the conversionName field refers to the name of the conversion tracker. In the Google Ads API, the conversionAction field, which represents the resource name of the conversion action, is analogous and should be included in the
CallConversion object. The name of the associated conversion tracker can be found with
conversion_action.name.
Regards,
Matt
Google Ads API Team

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