Request fields

Field	Description
`customer.taxRegistrations.taxRegistrationNumber`	This is the Tax ID that the Accelerator will validate. When this value is prefixed (with the country code) and the ID is valid, for example `IE12345` and the value in the `isoCountryCode` field is not specified or is not a valid code, the prefix is used to specify the country that the Tax ID belongs to.
`customer.taxRegistrations.taxRegistrationAdditionalId`	Use this field to provide an additional Tax ID when you want to validate IDs for countries like Egypt. See Egypt.
`customer.taxRegistrations.isoCountryCode`	This is the ISO code that represents the country to which the registration belongs. This is sometimes added to the Tax ID (as a prefix) for countries that require this.
`customer.taxRegistrations.taxRegistrationType`	This is the type of Tax Scheme to which the ID belongs, like VAT. If you specify no value here, the validation is run. If you do add a value, you must specify `VAT Registration`. This setting can also be configured by Vertex in the background settings during the implementation so it can vary.
`validationResult.isValid`	You can use this Boolean to skip the validation process. See Turning Off Validation.

Response fields

Field	Description
`isValid`	Boolean that indicates whether or not the Tax ID is valid. This is usually generated by the service, but it can also be set in the request.
`isSyntaxValid`	Indicates whether the syntax is correct.
`validationInfo`	More detailed information about the processing.
`taxRegistrationNumberNormalized`	The Tax ID in the standardized format.
`cached`	Indicates whether or not a cached validation was used.
`cacheTimestamp`	If a cached value is returned, this field shows the time that the initial request was sent to the external service.
`name`	The name that is associated with the Tax ID. Where available, this is retrieved from the Tax Authority's database.
`taxNumberService`	The name of the service that was used to validate the ID. For example, `vies` means it was validated using VIES.
`freeformAddress`	The address that is associated with the Tax ID. Where available, this is retrieved from the Tax Authority's database.
`customer.customercode.isBusinessIndicator`	If the Tax ID is valid, this is set to true in the response, indicating that the customer is a business.