1. Add to the IP module includes a sub block design, given as follows:
Wrong later provided a workaround: Type the following command in tcl command line, add IP son of xci file.
set_property generate_synth_checkpoint 0 [get_files RAM128X16.xci]
Reference Links: https://forums.xilinx.com/t5/PCI-Express/add-module-to-design-error/td-p/964962