Material Number, Plant,sales org ,distribution channel data base table
i am extending the material through bapi bapi_material_savedata.
first i need to check whether material is available for this combination Material Number(MATNR),sales organization(VKORG),Distribution Channel(VTWEG),Plant(WERKS).
if it is not available i need to extend the paricualr combination.
i tried mvke,marc tables.
mvke - Material Number,sales organization,distribution channel is there
marc - Material Number,Plant is there.
Please tell me in which database table we can find these 4 fields. or any bapi is there for checking material for this combination.