ID:15490 SERIALFDBKOUT and POSTDPASERIALDATAIN of atom "<name>" cannot be connected at the same time, because that would form a loop
CAUSE: The specified SERDES transmitter atom has data output port SERIALFDBKOUT and input port POSTDPASERIALDATAIN which cannot be connected at the same time.
ACTION: Modify the design so that the SERIAL ports of the SERDES transmitter atom are not both connected.