They will only confirm if there is a certain name and address associated with a specific VAT number or not. The system is sometimes not available due to the need to back-up the national databases. The Commission is working with the Member States to ensure that the length of time that their databases are down is kept to a minimum. If you receive an error message relating to this you should wait a few minutes and then try again, or try at another moment of the day. The European Commission cannot accept responsibility for the accuracy of the information in VIES on the web. This is because the information is obtained from national databases over which the Commission has no control. The European Commission cannot check, correct, add or delete any national VAT registrations. #Microsoft dynamics rms invalid procedure call or argument verification#.