Need some inputs on Item location ranging

Hi ,

•  We loaded item_loc ,item_loc_soh, future_cost , item_sup_cntry_loc , price_hist tables as part of item location conversion load.

• During ordloc data conversion  using custom shell script , we need to findout the item location combiations from ordloc data which are not already ranged in system,

Could any one let us know , the possible ways of raning and which are tables must be considered during this raning.

Regards

SVK