Generate token through template 'Edit Zone DNS' and under the Zone Resources select 'All Zones' or select which zones you want to give it access to. Give the Token a name you can easily identify later.
You can find your Account ID in the Cloudflare dashboard. Go to the Account Home page and look for "Account ID" in the right sidebar. This allows you to download all records available to the account that generated the API key.
OR
You can find the Zone ID in the Overview page of each domain under the API section at the bottom right. To selectively download records for specific zones.
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