ATKLDT013E: No monitor is selected.

Explanation: The list of selected monitors is empty. The list must contain at least one item before you can save the monitor view. Note that monitors are organized by categories, which appear in the table of available monitors as clickable links. Clicking a category reveals the contents, which might be monitors or clickable subcategories. Only selected (checked) monitors can be added to the list.

Operator Response: Select at least one monitor from the table of available monitors, add the monitor to the list of selected monitors, then try again.