Why is the PRESERVE_UNUSED_XCVR_CHANNEL .qsf assignment generating an error in the Fitter stage of compilation? - Why is the PRESERVE_UNUSED_XCVR_CHANNEL .qsf assignment generating an error in the Fitter stage of compilation? Description Due to a problem in the Quartus® Prime Pro Edition Software version 25.1 and earlier, you might see the following error when including the PRESERVE_UNUSED_XCVR_CHANNEL .qsf assignment for Agilex™ 5 FPGA devices with a single GTS transceiver bank: Error(24540): You have powered down all transceiver banks through the QSF assignment(s) 'set_instance_assignment -name PRESERVE_UNUSED_XCVR_CHANNEL OFF -to <pin_name>'. Thus, no transceiver channel is available. Modify the QSF assignments to power on at least one HSSI quad. Resolution This problem is scheduled to be fixed in a future release of the Quartus® Prime Pro Edition Software. Custom Fields values: ['novalue'] Troubleshooting 14024683355 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 25.1.1 25.1 ['Agilex™ 5 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']