Returned under the following conditions:

• Your request message is missing a required parameter.
• The format parameter in your request specified an unsupported export format for scan results that are older than 60 days. Only nessus and csv formats are supported for scan results that are older than 60 days.
• Your request included filter query parameters for scan results that are older than 60 days.

Returned if Tenable Vulnerability Management cannot find the specified scan.