The core-level XDC file creates a location constraint for each enabled transceiver channel primitive. The constraints reflect the transceiver primitive site locations selected during customization of the Physical Resources tab of the Customize IP dialog box. To use different physical locations, re-customize the core and choose different transceiver channel primitive locations rather than modifying the core-level XDC file.
Within the core-level XDC, one set_property LOC command exists per transceiver channel in the following format. The specific hierarchical path and location are examples only:
set_property LOC GTHE3_CHANNEL_X0Y0 [get_cells -hierarchical -filter {NAME =~ *gen_channel_container[0].*gen_gthe3_channel_inst[0].GTHE3_CHANNEL_PRIM_INST}]