Creating an XML upload from OpenCart to Hotline

Hello!
You need to create a XML upload with the shop Therefore, for the Hotline.
Purpose: transfer of stock from store to goods Hotline.
The goods are loaded on the Hotline separately.

Detailed TOR on the link
https://docs.google.com/document/d/1pO6nLzJ4EljvLBaKeVtTBZKhm11iSyNIRlfPx4H9hPU/edit