Replace multiple columns value base on a configuration table

I'm not sure I understand what the need is. But perhaps the following function, originally designed for a similar problem, could be a good starting point, appropriately adapting the names of the columns 

let

match=(rTab,dTabRow,rCols) =>
let
 dTabRowValues= Record.FieldValues(Record.SelectFields(dTabRow,rCols)),
 newCity= try Table.SelectRows(rTab, each List.ContainsAll( Record.FieldValues(_),dTabRowValues))[ActualCity]{0} otherwise dTabRow[City]
in
newCity

in
    match

Here how to call the function:

for each row of data table search a matching roe in the configuration table (comparing only relevant column value) and replacing old value with new value

Table.FromRecords(Table.TransformRows(dataTab, each _&[City=matchCity(ruleTab,_,relCols)]))