When web services are used within , the web service standards as defined in DigiKoppeling/Forum Standaardisatie "pas toe of leg uit" (comply or explain) are adhered to, with an exception for SSL. This results in:

• the web service MUST conform to WS-I  Basic Profile 1.1. This implies the use of SOAP 1.1, WSDL 1.1 and XML 1.0 (second edition).
• the web service MUST use WS-Addressing as per WS-I Basic Profile 1.2.
• the web service MUST conform to WS-I Simple SOAP Binding Profile Version 1.0.
• the connection MUST be secured using (mutual authenticated) TLS, with the parameters as defined under Secure connection.