Jayesh we had couple months back the same issue with some of our staff, they had UAE visa which was not cancelled and when we applied for qatar visa it was rejected and they asked us to go to the embasyy and clear the matter and cancel the Visa..Same thing happend for another collegue from SAudi..he had to go back and cancel the visa and come.. But if ur company in Qatar is a branch or a part of your Kuwaiti company then there is no problem at all..

But for Business Visa you dnt have any issue..above applies only for RP

And Soniraj..what depends on your sponsor ?have you got ne idea what 

you are talking about