[PS1.6 WS API] Working with WS to pass orders externally

[Malek Boubakri]

I'm asking for help on working with PS REST API,

First, i'm wondering if there is an official/non-official documentation for 1.6.x prestashop version WS API like this 1.4.x docs?

Second, I do like to pass orders externally (Mobile app), but it is impossible for me to do that regularly with the ws formal way. I know it is a popular topic and there is already questions for that perpose for other versions, anyway if anyone succeeded do that on PS 16 please feel free to help us on algorithm and may be to gives a well-passed order request JSON/XML object?

My shops PS versions: 1.6.1.4 & 1.6.1.17

Thanks PrestaShoppers... 

Edited January 13, 2018 by Malek Boubakri
link & fixes (see edit history)