# customerDefaultAddressUpdate - storefront - MUTATION
Version: 2025-04

## Description
Updates the default address of an existing customer.

### Access Scopes
`unauthenticated_write_customers` access scope.


## Arguments
* [addressId](/docs/api/storefront/2025-04/scalars/ID): ID! - ID of the address to set as the new default for the customer.
* [customerAccessToken](/docs/api/storefront/2025-04/scalars/String): String! - The access token used to identify the customer.


## Returns
* [customer](/docs/api/storefront/2025-04/objects/Customer): Customer The updated customer object.
* [customerUserErrors](/docs/api/storefront/2025-04/objects/CustomerUserError): CustomerUserError! The list of errors that occurred from executing the mutation.
* [userErrors](/docs/api/storefront/2025-04/objects/UserError): UserError! The list of errors that occurred from executing the mutation.


## Examples