# Request a new certificate

Source: https://developer.avalara.com/avatax-dm-combined-erp/document-management/design-considerations/request-new-certificate/

# Request a new certificate

**Element type: Required**

**Endpoints used:** [CreateCertExpressInvitation](https://developer.avalara.com/api-reference/avatax/rest/v2/methods/CertExpressInvites/CreateCertExpressInvitation/)

As exemption certificates expire, your integration must provide a function to send the customer a request for a new exemption certificate. The request should include the following information:

-   Recipient email address. If the delivery method is Email, and an email address is not provided, then the email that is currently set up with the customer will be used. If no email address is available for the customer, then the request will fail.
-   Cover letter title (optional)
-   Exposure zone(s) (optional)
-   Exempt reason(s)
-   Delivery method of either Email, Fax, or Download

You must also include your`companyId` and the`customerCode` in the request URL.

```
curl  -X POST  -H 'Accept: application/json'  -H 'Authorization: Basic ${btoa(`:`)}'  -H 'Content-Type: application/json'  --data '{    "recipient": "bob@example.org",    "coverLetterTitle": "STANDARD_REQUEST",    "exposureZones": [      89    ],    "exemptReasons": [      70    ],    "deliveryMethod": "Email"  }'  'https://sandbox-rest.avatax.com/api/v2/companies/{companyId}/customers/{customerCode}/certexpressinvites'
```

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