Each Boolean control in a radio buttons control must have a unique label. However, they do not have to have unique captions. The labels are used as the values of the enumeration type on the block diagram. In the following example, the second and third Boolean controls have the same label.

To correct this error, create a unique and valid label for each Boolean control.

In the following example, the Allow No Selection option is enabled for a radio buttons control. As a result, none of the Boolean controls can have a No Selection label.

When Allow No Selection is enabled, the enumeration uses the text No Selection to indicate when none of the radio buttons are checked.

To correct this error, change the value of the No Selection label or disable the Allow No Selection option.