"ERROR:Place:592 - A clock IOB / BUFGCTRL clock component pair have been found that are not placed at an optimal clock IOB / BUFGCTRL site pair. The clock IOB component <PAD_CDD_ADC_CLKDATA> is placed at site <AE18>. And the corresponding BUFG component <mux21_cddclk/I_cdd_adc_clkdata_RNI2FU1/BUFGCTRL> is placed at site <BUFGCTRL_X0Y18>"