Field COST_ELEM is missing in Data Source 0FI_GL_10

The Field COST_ELEM is there in extract structure FAGL_EXTSTRUCT_LEAD. But it is not there in data source 0FI_GL_10 in ECC. The extrator is the function module FAGL_GET_TT_DATA_LEAD for the data source 0FI_GL_10. Please advise.