There are situations when you’ll want to call Web services from C/AL, and those Web services might be protected by certificate that your local machine cannot validate directly. Web service might be secured with a self-signed certificate, or by a certificate obtained from an authority that is not globally trusted.
A European law defines that unless you can prove that a company has a valid VAT registration in their country, full VAT must be charged om selling products or services between European countries.
It is therefore necessary to validate each company VAR registration number.
This is bazillionth time that I’ve encountered this issue, so I’ve decided to post a solution to it. If you live in a country which doesn’t have Microsoft Dynamics NAV 2009 localized version yet, you might have tried installing the W1 (worldwide, English, non-localized) version.