No because the customer would never use that bad address, none of their customers would ever use it as a home address for instance.
If they decided to post a letter to every address in the database then one of them would be undelivered - but that is probably not a problem given the efficency of the post service!
Comments
> then when a new postcode mapping product comes on the market, check for that postcode.
I realize that, but won't adding a 'bad' postal code possibly interfere with customers' usage of the data in the first place?
No because the customer would never use that bad address, none of their customers would ever use it as a home address for instance.
If they decided to post a letter to every address in the database then one of them would be undelivered - but that is probably not a problem given the efficency of the post service!