Thanks Andre. I got it working by closing Field tab from excel.
But for my requirement when I am trying to add new AIF service for data import Publish button is disable.
Steps which I have followed:-
1.Created new query which will have both linked tables.
2.Created AIF service & deploy that
3Added that service in document data source under organization module with type =Service.
4.From Excel If I click on Add data it dnt show me newly added service
5 now if I add new line in document data source with Type=Query reference then it shows that query in ADD data tab. but in this case Publish button never get enable.
Kindly help me.