SELECT DISTINCT WDD.SOURCE_CODE SOURCE_SYSTEM , WDD.SOURCE_HEADER_NUMBER SOURCE_ID , WDD.SOURCE_HEADER_NUMBER SOURCE_NUMBER , WL.MEANING MEANING FROM WSH_DELIVERY_DETAILS WDD , WSH_LOOKUPS WL WHERE WL.LOOKUP_TYPE = 'SOURCE_SYSTEM' AND WL.ENABLED_FLAG = 'Y' AND WL.LOOKUP_CODE NOT IN ('OKE' , 'WSH') AND WDD.SOURCE_CODE = WL.LOOKUP_CODE