Error (129015): Output port RXDATA on atom <name>, which is a twentynm_io_serdes_dpa primitive, is not legally connected and/or configured

Description

You may see this error in the Quartus® Prime Standard and Pro edition software when using the Altera® LVDS SERDES Receiver IP in Arria® 10 devices and if you have any de-serialized (parallel) receiver outputs from the IP that are not connected in your design.

Resolution

To work around this error, either regenerate the Altera LVDS SERDES Receiver IP so that these bits are not implemented, or connect them up in your design.