This is the Authorization key. You have to add it as a GET parameter.
Your auth key can be found on the [CMS](https://www.pro6pp.nl/cms).


authKey

In case you don't know all of the required parameters, you can use the [suggest](#tag/Suggest-LU) call to gather them first.

If the input identifies a unique address, all available information
about said address is returned.

* To validate if an address has either a streetNumber or a Premise, query through the `streetNumberAndPremise` field.
* To validate if an address exists with a certain streetnumber, use the `streetNumber` field.
* To validate if an address exists with a certain premise, use both the `streetNumber` and `premise` fields.
* Either `streetNumberAndPremise` or `streetNumber` is required. If both are given, only `streetNumber` is used.


The address's postal code which can be up to four digits long


postalCode

Luxembourg postalCode

street

streetNumber

The address's streetnumber and premise (extension/addition)
