ID:176135 All differential I/O nodes driven by fast PLL <name> must be on same side of device

CAUSE: The Fitter cannot place the specified fast PLL because the differential I/O nodes it drives are not all assigned locations on the same side of the device. As a result, the differential I/O nodes cannot be reached using any differential I/O clock networks.

ACTION: Change the location assignment for the fast PLL or the differential I/O nodes it drives so that all differential I/O nodes are assigned locations on the same side of the device, or reduce the number of differential I/O nodes driven by the fast PLL so that the fast PLL drives only differential I/O nodes on the same side of the device.