# Update an issuer

Source: https://developer.avalara.com/products/avalara-1099-and-w9/integration-guides/1099-and-w-9/vyt0483608189822/

Guide: 1099 & W-9

# Update an issuer

Learn how to update an existing issuer's information, including contact details or reference ID.

**Endpoint**: `PUT /1099/issuers/{id}`

**Use case**:

Update an existing issuer’s information, such as contact details or reference ID.

**Sample response**

```
{
  "name": "ACME Corp Updated",
  "nameDba": "ACME Services",
  "tin": "123-00-0000",
  "referenceId": "ACME-2025-001",
  "telephone": "415-555-0101",
  "taxYear": 2024,
  "countryCode": "US",
  "email": "taxadmin@acmecorp.com",
  "address": "123 Innovation Drive",
  "city": "San Francisco",
  "state": "CA",
  "zip": "94105",
  "foreignProvince": null,
  "transferAgentName": null,
  "lastFiling": false
}
```

**Properties**

-   Same as the `POST` request. Use it to override or adjust issuer properties.
-   Supply all properties, even if you’re updating only one. The system doesn’t support partial updates.