I am new to Adwords and I am trying to figure out if there is a way to download report(Keyword performance) for all accounts and campaigns (single report) using the Adwords API. I am able to get the report for individual ClientCustomerIds, but I want it at the level of all accounts and campaigns. We can create such a report in the Adwords account web interface by specifying "All accounts and campaigns" option. Just want the same through APIs.
Please let me know if there is any way.