The selected control cannot store data, because it is bound to a non-repeating field or group, but the control itself repeats. ...

The selected control cannot store data, because it is bound to a non-repeating field or group, but the control itself repeats. You can do one of the following:

To change the control to a non-repeating control, right-click the control and click Change To.

To change the binding to a repeating field or group, right-click the control, and then click Change Binding.

To modify the field or group so that it repeats, in the Fields task pane, double-click the field or group, and then select the Repeating check box.