How do I fix this error frm 40112- Attempted go_item to a non-enabled item: ALLOT_REQUEST:VISN_NUMB

For some reason I am getting a lot of forms that has this error messages and I am not sure how to fix it. Here is what the code looks like. Its a very simple code but I have no clue way it is not working.

go_item('allot_request.visn_number');

enter_query;