Post code / City validation

Post code / City validation

Hi,

I'm looking to subscribe to an entreprise licence for my company.
Pre-sale question : is it possible to integrate in the accounts conditionnals fields between post code and city.

We are a french company and we have similar post code for couple of cities. I want to build a first selection list with the Post code and conditional show a sublist of cities with this post code.

I've seen that i can create two custom selection list and create dependencies between those two. But we've got more than a 1 000 post code in France and a total of 36 000 cities. How can i integrate that in your CRM ?

Thanks,

Best regards,

François