Hello,
Thanks for reaching out. Can you please try following the instructions under the 'Create a new call campaign' section of
this general support article? It seems likely that under, “Select the ways you'd like to reach your goal”, “Phone Calls” was not selected for one of your campaigns. If you continue to not see this option in the UI, please reach out to
product support.
Regards,
Matt
Google Ads API Team

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