We use the api introduced on the following website every day in order to predict customer's billing amount.
https://docs.microsoft.com/en-us/partner-center/develop/get-a-customer-subscription-resource-usage-records
What I would like to ask is what it means the term "the current billing period" used on the above website.
Specifically, I would like to know how long the term refers to (how many days of the following month can be obtained).