SELECT DISTINCT UNIT_OF_MEASURE , UOM_CODE , INVENTORY_ITEM_ID , ORGANIZATION_ID FROM (SELECT UNIT_OF_MEASURE , UOM_CODE , INVENTORY_ITEM_ID , TO_NUMBER(NULL) ORGANIZATION_ID FROM MTL_UOM_CONVERSIONS WHERE (DISABLE_DATE IS NULL OR DISABLE_DATE+1 > SYSDATE ) UNION ALL SELECT TO_UNIT_OF_MEASURE UNIT_OF_MEASURE , TO_UOM_CODE UOM_CODE , INVENTORY_ITEM_ID , TO_NUMBER(NULL) ORGANIZATION_ID FROM MTL_UOM_CLASS_CONVERSIONS WHERE (DISABLE_DATE IS NULL OR DISABLE_DATE+1 > SYSDATE ) ) UNION ALL SELECT PRIMARY_UNIT_OF_MEASURE , PRIMARY_UOM_CODE , INVENTORY_ITEM_ID , ORGANIZATION_ID FROM MTL_SYSTEM_ITEMS