# Request a new certificate

Source: https://developer.avalara.com/products/ecm/integration-guides/document-management/wet5779845829641/

Guide: Exemption Certificate Management (ECM)

# Request a new certificate

Learn how to request a new exemption certificate when the current one expires.

**Element type:** Required

**Endpoints/Models 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. Include the following information in the request:

-   Recipient email address. If you specify **Email** as the delivery method, and the customer doesn't provide an email address, then use the email address currently set up with the customer. The request will fail if an email address isn't available for the customer.

-   Cover letter title (optional)

-   Exposure zones (optional)

-   Exempt reasons

-   Delivery method of either Email, Fax, or Download

Include your `companyId` and the `customerCode` in the request URL.

**Example**

```
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'
```