The XDC targets the AC701 when either the correct Artix 7 FPGA part (XC7A200TFBG676) is selected, or when the AC701 board is targeted directly in the Vivado project options.
Figure 1. AC701 Board Connectivity
The XDC targets the AC701 when either the correct Artix 7 FPGA part (XC7A200TFBG676) is selected, or when the AC701 board is targeted directly in the Vivado project options.