ID:176170 Can't place node "<name>" -- node has differential I/O pin pair inconsistencies

CAUSE: The Fitter cannot place the specified node because it has differential I/O pin pair inconsistencies. You may have changed the netlist by specifying a differential I/O standard for a non-differential I/O pin or a non-differential I/O standard on a differential I/O pin.

ACTION: Remove the I/O standard from the specified node or use the Fitter to update the netlist.