Local Reference Table

I am created a new reference table and ran the stored procedure

UP_POPULATE_REFTABLES_TABLE. I am able to see the table in the system tables but somehow when I try to add a record I get the following error.

A system Error has occured

please cint your system administrator and provide the following information:

windowmenu: w_ref_tbl

Obj: dw_sheet

objectevent:ue_insertrow

Line: 9

Errorcode:12

Error Test: Data Window Column Type doesnot match getitem type at line9 in ue_insert row event of object dw_sheet of w_ref_tbl.

I am unable to debug.

Any suggestions...