openapi: 3.1.0
info:
  title: Avalara 1099 & W-9 1099 Forms Interop API
  description: The Avalara 1099 and W-9 API automates collection, validation, and e-filing of IRS forms including 1099 variants (1099-NEC, 1099-MISC, 1099-K, 1099-INT, 1099-DIV), 1095 forms, W-2, and 1042-S. It provides endpoints for creating, updating, managing, and filing various IRS information returns.
  version: '1.0'
  contact:
    name: Avalara Developer Relations
    url: https://developer.avalara.com/
    email: developer.relations@avalara.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
  termsOfService: https://legal.avalara.com/#siteterms
servers:
- url: https://api.avalara.com/1099/v1
  description: 1099 API Production
- url: https://api.sbx.avalara.com/1099/v1
  description: 1099 API Sandbox
security:
- bearerAuth: []
tags:
- name: Interop
  description: Interoperability and network exchange
paths:
  /interop/documents:
    post:
      operationId: submitInteropDocument
      summary: Avalara Submit a Document via Interoperability Network
      description: Submits a document through the interoperability network (e.g., Peppol) for delivery to the recipient.
      tags:
      - Interop
      parameters:
      - name: avalara-version
        in: header
        required: true
        schema:
          type: string
          default: '1.0'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/InteropDocumentRequest'
      responses:
        '202':
          description: Document accepted for interop delivery
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DocumentSubmissionResponse'
components:
  schemas:
    DocumentSubmissionResponse:
      type: object
      properties:
        id:
          type: string
          description: Document submission ID
        status:
          type: string
          enum:
          - Pending
          - Accepted
          - Rejected
          - Error
        statusDate:
          type: string
          format: date-time
    InteropDocumentRequest:
      type: object
      required:
      - dataFormat
      - data
      - recipientIdentifier
      properties:
        dataFormat:
          type: string
        data:
          type: string
        recipientIdentifier:
          type: string
          description: Recipient identifier on the interop network
        recipientIdentifierScheme:
          type: string
          description: Identifier scheme (e.g., peppol)
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: OAuth 2.0 bearer token
externalDocs:
  description: 1099 & W-9 API Documentation
  url: https://developer.avalara.com/api-reference/avalara1099/avalara1099/