PCB socket unfound

I'm currently making a FPC to measures the voltage output, when a specific FPC socket on the motherboard is connected to an external device.

Since the socket is fully covered when the external device is connected, my design will be an interface between the external device, and the FPC socket on the motherboard.

I have already designed the FPC making the junction between the two, but i can't find any schematic of my socket, be it the male part, or the female part.

Are all sockets homologated, and so, can i design my own easily without the specific schematic?

If not, do you think you can provide my design with a specific socket, if i provide where to put it and the connection to each pin?