Israeli client accepted in 🇻🇳
Interesting one for us this ( I own a muay thai gym). We sent him draft documents to check over for any spelling mistakes etc .. he didn't understand and submitted the draft invite letter which was unsigned / unstamped. We had also at that point, not given him our gym certification.
The embassy rang us and we explained. They approved without the rest of the documents being sent. Surprised me that did.