One item -2 item Group-is it possible

HI All,

I am having one Item, it comes in

item group - A ,its Revenue account -trading sale

and also comes in another

Item group - B ,its Revenue account -manufacturing sale

Means i can sale it as trading item as well as manufacturing item.

how is it possbile.

If i take it in item gruop A , i can not take same item in item group B,

but i dont want to make 2 item codes for the same item.

Regards,

mahesh.