Rendering Report History Snapshots Using URL Access
You can render a report based on a report history snapshot by supplying the Snapshot parameter and setting its value to a valid snapshot ID. You must use the rs: parameter prefix with the Snapshot parameter. The parameter value is in the format YYYY-MM-DDTHH:MM:SS, based on the International Organization for Standardization (ISO) 8601 standard.
If you omit this parameter, the report is rendered according to the report execution and cache management option settings of the report server. For more information about report execution, see Setting Report Processing Properties.
The following example shows a URL that retrieves a report history snapshot: