Error when calling SOAP API from VIES (SOAP) for VAT number validation


I’m getting an error in calling this SOAP API, but cannot find the reason for it. I’ve tried a different public API and that works, seems like it’s this specific one giving the error. Also cannot find mentions of other people having issues with this call. Anyone have a clue what the root casue could be?

Error message: Method ‘checkVatPortTypeClient.checkVat’ not found
Exception Type: System.MissingMethodException

ContractName: checkVatPortType
Method: checkVat
countryCode (string)
vatNumber (string)

have a look here:

Thanks, the solution was indeed to also define the output variables ‘valid’, ‘name’ and ‘address’

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