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Address validation in Salesforce with Apex

Cleanse Lead, Contact and Account addresses against 2.4 million authoritative Danish addresses — with a single Apex callout or a Flow HTTP action.

Danadresse is a plain REST API, so Salesforce can call it from Apex, from a Flow (HTTP Callout, GA since Winter '24) or from a Lightning Web Component with autocomplete at input time.

How to set it up

1. Get an API key
   Free account on the dashboard → copy dawa_live_….
2. Create a Named Credential
   Register https://api.danadresse.dk as a Named Credential so the key isn't hard-coded in Apex.
3. Call /datavask/adresser
   From a trigger, a Flow HTTP action or a batch — the response gives category A/B/C plus the corrected address.
4. Write the result back
   Store the cleansed address + DAR UUID in custom fields, so duplicates can be matched on UUID instead of text.

# Apex callout to /datavask/adresser
// Apex callout — vask en adresse før den gemmes på Account
HttpRequest req = new HttpRequest();
req.setEndpoint('https://api.danadresse.dk/datavask/adresser?betegnelse='
    + EncodingUtil.urlEncode(billingAddress, 'UTF-8'));
req.setHeader('X-Api-Key', 'dawa_live_…');
req.setMethod('GET');
HttpResponse res = new Http().send(req);
// res.getBody(): kategori A/B/C + den autoritative DAR-adresse

Good to know

A packaged AppExchange component is on the roadmap — write to partners@lynbro.dk for early access.