API keys are tied to individual Users with the ability to have multiple API keys per user. As a User your API key can only provide access to data for the locations that you have access to within an account. Users who are designated as an account OWNER should automatically have access to all locations. ADMIN users who wish to use the API to make changes or retrieve data for the entire account must be sure that they have been added as a user to all locations.
Updated over 2 years ago