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The Report Status list will show up.
means that the report has been generated and is ready for download. Click under "File Name" to download the report. 
means that the report creation is in progress. Due to the large size of these files, certain reports can take several minutes to generate. Enterprise reports are executed asynchronously, so you can move on to another task and come back to the page later to download the generated report. 
means that the report creation is pending.
