> ## Documentation Index
> Fetch the complete documentation index at: https://docs.streamlinedpayments.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Set address as default billing

> Sets a specific address as the default billing address for a customer.



## OpenAPI

````yaml /api-reference/openapi.yaml put /customers/{customer_id}/addresses/{id}/set_as_default_billing
openapi: 3.0.3
info:
  title: Streamlined API
  description: >
    Access customers, customer applications, customer groups, products, payouts,
    invoices, transactions, and deposit links programmatically through this API,
    and receive webhooks when deposit links change. All requests must be
    authenticated with an API key.
  version: 1.6.0
  license:
    name: Proprietary
    url: https://streamlinedpayments.com/terms
servers:
  - url: https://api.staging.streamlinedpayments.com/api/v1
    description: Sandbox
  - url: https://api.streamlinedpayments.com/api/v1
    description: Production
security:
  - AppIdAuth: []
    ApiKeyAuth: []
tags:
  - name: Customers
    description: Create, update and delete the businesses you sell to.
  - name: Customer applications
    description: >-
      List the applications your customers submit, and approve them. Approving
      can also set net terms and export the customer to Shopify. See [Approve
      customer applications](/guides/customer-applications).
  - name: Customer groups
    description: >-
      Organize customers into groups and manage who's in each one. A group can
      be linked to a Shopify B2B company.
  - name: Customer files
    description: Upload and manage files attached to a customer.
  - name: Customer addresses
    description: Manage a customer's addresses and choose their default billing address.
  - name: Orders
    description: Create orders, add and remove line items, and schedule them.
  - name: Invoices
    description: Create invoices from orders, then list, look up and update them.
  - name: Transactions
    description: List transactions and look one up.
  - name: Payouts
    description: List payouts, including pending ones, and look one up.
  - name: Products
    description: >-
      Create and update the products and services you sell, import them in bulk,
      and merge duplicates.
  - name: Deposit links
    description: Collect money from a customer before an invoice exists.
  - name: Webhooks
    description: >-
      Register HTTPS endpoints to receive events when something changes. See
      [Webhooks](/guides/webhooks) for signatures, retries and delivery
      guarantees.
paths:
  /customers/{customer_id}/addresses/{id}/set_as_default_billing:
    put:
      tags:
        - Customer addresses
      summary: Set address as default billing
      description: Sets a specific address as the default billing address for a customer.
      operationId: setAddressAsDefaultBilling
      parameters:
        - name: customer_id
          in: path
          description: The UUID of the customer
          required: true
          schema:
            type: string
            format: uuid
        - name: id
          in: path
          description: The ID of the address
          required: true
          schema:
            type: integer
      responses:
        '200':
          description: Address set as default billing successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  customer:
                    type: object
                    properties:
                      uuid:
                        type: string
                        format: uuid
                      billing_address:
                        $ref: '#/components/schemas/Address'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          description: Address not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: Address not found
        '422':
          description: Unprocessable entity
          content:
            application/json:
              schema:
                type: object
                properties:
                  errors:
                    type: array
                    items:
                      type: string
components:
  schemas:
    Address:
      type: object
      properties:
        id:
          type: integer
        address1:
          type: string
        address2:
          type: string
        city:
          type: string
        state:
          type: string
        postal_code:
          type: string
        phone:
          type: string
        country:
          type: string
        email:
          type: string
        cc_email:
          type: string
          description: CC email addresses (comma-separated list)
        first_name:
          type: string
        last_name:
          type: string
        company_name:
          type: string
    Error:
      type: object
      properties:
        error:
          type: string
        message:
          type: string
  responses:
    Unauthorized:
      description: Authentication failed
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          examples:
            AuthenticationRequired:
              value:
                error: Authentication required
                message: >-
                  API endpoint requires authentication. Please provide valid
                  X-App-Id and X-Api-Key headers.
            InvalidCredentials:
              value:
                error: Invalid credentials
                message: >-
                  The provided API credentials are invalid. Please check your
                  X-App-Id and X-Api-Key values.
  securitySchemes:
    AppIdAuth:
      type: apiKey
      in: header
      name: X-App-Id
      description: App ID for authentication
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-Api-Key
      description: API Key for authentication

````

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