ID:169012 Output or bidirectional pin <name> in pin location <name> (pad_<number>) is too close to VREF pin in pin location <name> (pad_<number>)
CAUSE: You assigned the specified output or bidirectional pin to the specified pin location in the target device that is too close to the VREF
pin in the specified location.
ACTION: Assign the output or bidirectional pin to a different location that is at least one pin in-between the VREF
pin.