# The Avalara client is registered through a fiscal representative

Source: https://developer.avalara.com/vat-ecom/transactions/certification-requirements/avalara-client-registered-through-fiscal-rep/

**Element type:** Required

**Endpoints/models used:** [TransactionParameterModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/TransactionParameterModel/), [TransactionLineParameterModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/TransactionLineParameterModel/), [CustomerSupplierCountryParamModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/CustomerSupplierCountryParamModel/)

Your integration should allow users to specify whether the Avalara client is registered through a fiscal representative in the given Nexus country for VAT. Fiscal representatives manage the Avalara client's VAT obligations in a particular country and act on the seller's behalf.

You can specify whether the Avalara client is registered through a fiscal rep using the `IsRegisteredThroughFiscalRep` parameter in the [CustomerSupplierCountryParamModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/CustomerSupplierCountryParamModel/). This can also be specified in the [TransactionParameterModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/TransactionParameterModel/) or [TransactionLineParameterModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/TransactionLineParameterModel/) model. If specified in the transaction, this value will override the value configured in the [CustomerSupplierCountryParamModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/CustomerSupplierCountryParamModel/).

The `IsRegisteredThroughFiscalRep` field specifies whether the transaction calculate VAT with the Avalara client as the importer of record. Some taxes only apply if the Avalara client is the importer of record for a product. In cases where companies work together to ship products, they may have a mutual agreement as to which company is the entity designated as importer of record.

-   For sales documents, this field specifies whether the Avalara client in this transaction is the importer of record.

-   For purchase documents, this field specifies whether the Avalara client, who is the buyer in this transaction, is the importer of record or whether the supplier is the importer of record.

[![Closed](https://avalara-devdocs-prod.mcoutput.com/vat-ecom/Skins/Default/Stylesheets/Images/transparent.gif)View example](javascript:void\(0\);)

```
 {  "parameters":[    {      "name": "Transport",      "value": "none"    },    {      "name": "IsRegisteredThroughFiscalRep",      "value": "false"    }  ],  ...} 
```