This error occurs when you use a dynamic front panel control or indicator inside a structure as shown in the following block diagram. You cannot place dynamic front panel terminals inside structures because you must read from or write to dynamic terminals exactly once. Placing a terminal inside of a structure can cause LabVIEW to access the terminal multiple times or skip it entirely. Without this restriction, LabVIEW cannot guarantee the run time type safety of the block diagram.

To correct this error, move the dynamic front panel terminals outside of all structures as shown in the following block diagram.
