You need to maintain the available storage space for ordered use reports. If your organization runs out of storage space in Usage Analyst, no new reports can be processed, and pending orders will be put on hold.
The default maximim storage limit is 50MB. Remember, you share this space with other users in your organization. To maintain available storage space, know your maximum storage limit and regularly delete old reports.
When you try to order a new report and you are out of space, Usage Analyst will send you an on-hold or storage-limit-exceeded message. Delete reports you don't need to clear space for your new report order.