How to create a TEZI-compatible SD card with a custom image

Is there a document that clearly describes files required on a SD card to make an image compatible with TEZI?

I am trying to create the SD card suitable for loading the bootloader, kernel and filesystem into the eMMC using TEZI

For pre-built image you just need to unpack it to SD card. See details here.

If you building an OS image using OpenEmbedded/Yocto TEZI compatible image will be generated automatically.

If you want to modify image manually please read this.