Hi, Thank you for raising this concern to the Google Ads API support team.
Regarding your concern, please note that the metrics.phone_calls is not a compatible/selectable metric for the customer report and this is the reason why you are getting the said error. Kindly note that for you to know what fields that are compatible or selectable to a specific report, you will need to select the 'Yes it is' option in the dropdown of a specific report. I would suggest using the customer_query_builder (https://developers.google.com/google-ads/api/fields/v13/customer_query_builder) as this will greatly help you build and validate your query. Let us know if you have further questions. Regards, Google Ads API Team ref:_00D1U1174p._5004Q2kqou6:ref -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog: https://googleadsdeveloper.blogspot.com/ =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API and Google Ads API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en --- You received this message because you are subscribed to the Google Groups "Google Ads API and AdWords API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/JmuMm000000000000000000000000000000000000000000000RTRNT300OvF4Vm3JQA2FzgBdVkPeIg%40sfdc.net.