If your design contains multiple JESD204B IPs with different configurations, you may see the following warning in Intel® Quartus® Prime Pro software version 15.1 or later during Analysis and Synthesis stage.
When targetting Intel Stratix® 10 devices:
Warning (16817): Verilog HDL warning at altera_xcvr_rcfg_10_reconfig_parameters.sv: overwriting previous definition of module altera_xcvr_rcfg_10_reconfig_parameters
When targetting Intel Arria® 10 or Intel Cyclone® 10 GX devices:
Warning (16817): Verilog HDL warning at altera_xcvr_native_a10_reconfig_parameters.sv: overwriting previous definition of altera_xcvr_native_a10_reconfig_parameters package
If your design does not rely on the *_reconfig_parameters.sv package files for performing transceiver reconfiguration, it is safe to ignore the warning.