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Technical Information

Dear user,

 To respond to the needs expressed by several users, the Vies-on-the-Web system offers the facility of testing to development teams trying to:

  • Perform integration testing of their own applications;
  • Or to verify the availability of the VIES-on-the-Web application.

 Both actions can be performed as follows:

For the interactive service:

  • in the field “VAT Number”, please input the following exact text “TESTVATNUMBER”;
  • Push “Verify”;
  • The reply to be received should be: “No, invalid VAT number”;

 → This reply means that the Service is available.

For the SOAP service (WSDL link:, you may send the below xml request:

<soapenv:Envelope xmlns:soapenv=











And you will receive the below reply:


<soap:Envelope xmlns:soap="">


      <checkVatResponse xmlns="">










It is allowed to send one test message (“TESTVATNUMBER”) every 5 minutes. If this is not respected the IP address issuing the requests will be blocked.

Thank you in advance for your understanding.


Dear User,

VIES on the Web will offer to a non-EU trader the capability to request for VAT Registration information validity of EU traders (VoES) and to acquire the consultation number for this request.


Dear User,

Please take into account that we are currently experiencing some issues with the verification against the Danish National VAT database.

As a result, the validation of the Danish VAT numbers in VIES on the Web application cannot be guaranteed.

In case that you encounter such a situation, please re-submit your validation later.

We are working to resolve the issue. Sorry for any inconvenience.