Due to Intel® Quartus® Prime Pro Edition software version 19.3 and eariler the pin out file report with Arria®10 devices is differnet from the
Intel® Arria®10 pin out datasheet ver1.6 .
For example if you see Intel® Arria®10 pin out datasheet ver1.6 page13 10AX115H3F34I2LG device AP2 pin and B1 pins are RREF_BR/RREF_TR while these are reported as "GND" in Intel® Quartus® Prime Pro Edition software version 19.3 and eariler.
Intel® Arria®10 pin out datasheet ver1.6 is correct.
Intel® Quartus® Prime Pro Edition software is fixed in version 20.3.