ID:12413 Output port "<name>" of PSEUDO_DIFF_OUT primitive "<name>" must drive only one OBUF primitive on the I port

CAUSE: The specified PSEUDO_DIFF_OUT primitive is not connected properly. The specified PSEUDO_DIFF_OUT primitive must drive only an OBUF primitive on the I port.

ACTION: Ensure that the PSEUDO_DIFF_OUT properly drives out to only the I port of an OBUF primitive.