Your API quota is affected by each call to this service operation, so you shouldn't call it very often. Depending on the expected size of the report and your own requirements, you should call this service operation in intervals as short as every few minutes to as long as once every hour. Use your own requirements and API quota allowance to determine how often you should call this service operation.
The downloaded report is compressed by using zip compression. You must unzip the report before you can use its contents.
For more information, see Request and Download a Report.