My HR has received approval letters from canton and federal authorities. She has even forwarded them to me which I have mailed to the embassy in London. But it seems that those were not the required documents.
My HR is also clueless on what that required document is
and the embassy people are clueless if they will/should receive any authorisation letter from the canton without which they cannot stamp a entry visa.
Also I have no idea why my wife's permit is not yet authorised and seems even mine is pending. I guess I should wait till the HR is back in office next week and contact her.