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From: Edje.Rommel on 29 Aug 2006 16:38
Hello,

I've have a problem with a webservice. I just want to validate a VAT
number by country code and VAT numer. The return value should be like
"it's valid" and/or the name where it's registered to.

To do this i can access the webservice on the following location:
http://ec.europa.eu/taxation_customs/vies/api/checkVatPort

A WSDL file is also available:
http://ec.europa.eu/taxation_customs/vies/api/checkVatPort?wsdl.

My question is how can i get the results i want. Can someone help me
with just the little module that does the request.

I already right-click on Web reference and added
http://ec.europa.eu/taxation_customs/vies/api/checkVatPort?wsdl, but
when i want to use checkvat(country,VAT), it exepect 3 other fields and
the return type seem to be date.

My understanding is that i only have to use 2 parameters (via XML ?),
and retrieve a string value (XML ?)

I just need something like
returnvalue = doRequest(country,VAT).valid
Name = returnvalue.Name
Valid = returnvalue.valid
etc.....


Thanks for all your help.

Regards,

Edje

From: adm on 29 Aug 2006 17:29
Edje.Rommel(a)gmail.com wrote:

> My question is how can i get the results i want. Can someone help me
> with just the little module that does the request.

Once you've added the web reference, you can do this sort of thing in a
method or sub:

Dim ws As New WindowsApplication1.eu.europa.ec.checkVatService
Dim result As Date

result = ws.checkVat("US", "20", True, "sample", "address")

The web service you mentioned has at least two methods: checkVatService
and checkVatServiceAsync. The latter is only looking for two input
parameters, but it doesn't return a value. The former returns a value
(a date), but expects five input parameters (which will show up in
Intellisense).

I don't know enough about this webservice to say what values in those
parameters are valid, but I can tell you that the values in my example
above are the right data type but cause an error, so obviously
something is wrong with them.

But if you know the right range of values to pass in, you should be
able to get a valid response (a date) back.

hth a little bit.

adm

From: adm on 29 Aug 2006 17:29
Edje.Rommel(a)gmail.com wrote:

> My question is how can i get the results i want. Can someone help me
> with just the little module that does the request.

Once you've added the web reference, you can do this sort of thing in a
method or sub:

Dim ws As New WindowsApplication1.eu.europa.ec.checkVatService
Dim result As Date

result = ws.checkVat("US", "20", True, "sample", "address")

The web service you mentioned has at least two methods: checkVatService
and checkVatServiceAsync. The latter is only looking for two input
parameters, but it doesn't return a value. The former returns a value
(a date), but expects five input parameters (which will show up in
Intellisense).

I don't know enough about this webservice to say what values in those
parameters are valid, but I can tell you that the values in my example
above are the right data type but cause an error, so obviously
something is wrong with them.

But if you know the right range of values to pass in, you should be
able to get a valid response (a date) back.

hth a little bit.

adm

From: adm on 29 Aug 2006 18:09
adm wrote:

> I don't know enough about this webservice to say what values in those
> parameters are valid, but I can tell you that the values in my example
> above are the right data type but cause an error, so obviously
> something is wrong with them.

Ok, I looked into VAT numbers a little bit so I could better understand
what kinds of values the web service is expecting. The values I passed
in above are not right: the web method is expecting (at least) two
strings, not a string and a number.

I changed my code to:

ws.checkVat("CZ", "991231123")

But I am getting an {INVALID_INPUT} error back.

When I run equivalent code in PHP, it seems to work fine, that is,
there is no error thrown, and I get an array back with the values I
passed to the service.

This leads me to believe that the SOAP service is not accepting
parameters from the .NET client in the way that we are used to seeing
with .NET-based web services. So maybe these parameters need to be
presented to the service differently. If someone has some expertise in
passing "complex" parameters to non-.NET web services, maybe they can
chime in with the (simple?) solution.

From: adm on 29 Aug 2006 18:09
adm wrote:

> I don't know enough about this webservice to say what values in those
> parameters are valid, but I can tell you that the values in my example
> above are the right data type but cause an error, so obviously
> something is wrong with them.

Ok, I looked into VAT numbers a little bit so I could better understand
what kinds of values the web service is expecting. The values I passed
in above are not right: the web method is expecting (at least) two
strings, not a string and a number.

I changed my code to:

ws.checkVat("CZ", "991231123")

But I am getting an {INVALID_INPUT} error back.

When I run equivalent code in PHP, it seems to work fine, that is,
there is no error thrown, and I get an array back with the values I
passed to the service.

This leads me to believe that the SOAP service is not accepting
parameters from the .NET client in the way that we are used to seeing
with .NET-based web services. So maybe these parameters need to be
presented to the service differently. If someone has some expertise in
passing "complex" parameters to non-.NET web services, maybe they can
chime in with the (simple?) solution.

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