openapi: 3.0.3
info:
  title: SAP Business ByDesign OData Analytics Procurement API
  description: OData v2 REST API for SAP Business ByDesign — a cloud ERP solution for midmarket companies. Provides access to business objects and analytics across financials, CRM, procurement, supply chain, project management, and HR. Supports CRUD operations and custom OData services via the /sap/byd/odata/cust/v1/ namespace, plus pre-built analytics services via /sap/byd/odata/{service_name}.svc/.
  version: 1.0.0
  contact:
    name: SAP Support
    url: https://support.sap.com
  externalDocs:
    description: SAP Business ByDesign OData API Examples
    url: https://community.sap.com/t5/enterprise-resource-planning-blog-posts-by-sap/sap-business-bydesign-odata-api-examples/ba-p/13400614
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: https://{tenant}.bydesign.cloud.sap
  description: SAP Business ByDesign tenant
  variables:
    tenant:
      default: my-tenant
      description: Your SAP Business ByDesign tenant hostname
security:
- basicAuth: []
- oAuth2: []
tags:
- name: Procurement
  description: Access purchase orders, supplier invoices, and procurement-related business objects.
paths:
  /sap/byd/odata/cust/v1/khpurchaseorder/PurchaseOrderCollection:
    get:
      summary: Query purchase orders
      description: Query purchase orders with optional OData filters.
      operationId: queryPurchaseOrders
      tags:
      - Procurement
      parameters:
      - $ref: '#/components/parameters/FilterParam'
      - $ref: '#/components/parameters/SelectParam'
      - $ref: '#/components/parameters/ExpandParam'
      - $ref: '#/components/parameters/TopParam'
      - $ref: '#/components/parameters/SkipParam'
      - $ref: '#/components/parameters/FormatParam'
      responses:
        '200':
          description: Collection of purchase order records.
          content:
            application/json:
              schema:
                type: object
                properties:
                  d:
                    type: object
                    properties:
                      results:
                        type: array
                        items:
                          $ref: '#/components/schemas/PurchaseOrder'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /sap/byd/odata/cust/v1/khsupplierinvoice/SupplierInvoiceCollection:
    get:
      summary: Query supplier invoices
      description: Query supplier invoices with OData filter parameters.
      operationId: querySupplierInvoices
      tags:
      - Procurement
      parameters:
      - $ref: '#/components/parameters/FilterParam'
      - $ref: '#/components/parameters/SelectParam'
      - $ref: '#/components/parameters/TopParam'
      - $ref: '#/components/parameters/SkipParam'
      - $ref: '#/components/parameters/FormatParam'
      responses:
        '200':
          description: Collection of supplier invoice records.
          content:
            application/json:
              schema:
                type: object
                properties:
                  d:
                    type: object
                    properties:
                      results:
                        type: array
                        items:
                          $ref: '#/components/schemas/SupplierInvoice'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    PurchaseOrder:
      type: object
      description: SAP Business ByDesign purchase order.
      properties:
        ObjectID:
          type: string
        ID:
          type: string
        SupplierID:
          type: string
        StatusCode:
          type: string
        NetAmount:
          type: string
        CurrencyCode:
          type: string
        OrderDate:
          type: string
          format: date
    ODataError:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
            message:
              type: object
              properties:
                lang:
                  type: string
                value:
                  type: string
    SupplierInvoice:
      type: object
      description: SAP Business ByDesign supplier invoice.
      properties:
        ObjectID:
          type: string
        ID:
          type: string
        SupplierID:
          type: string
        StatusCode:
          type: string
        GrossAmount:
          type: string
        CurrencyCode:
          type: string
        PostingDate:
          type: string
          format: date
  parameters:
    FormatParam:
      name: $format
      in: query
      required: false
      description: Response format. Use 'json' for JSON output.
      schema:
        type: string
        enum:
        - json
        - xml
        default: json
    SelectParam:
      name: $select
      in: query
      required: false
      description: Comma-separated list of properties to include in the response.
      schema:
        type: string
    TopParam:
      name: $top
      in: query
      required: false
      description: Maximum number of records to return.
      schema:
        type: integer
        minimum: 1
        maximum: 1000
        default: 20
    ExpandParam:
      name: $expand
      in: query
      required: false
      description: Comma-separated navigation properties to expand inline.
      schema:
        type: string
    FilterParam:
      name: $filter
      in: query
      required: false
      description: OData filter expression (e.g., Status eq 'Released' and PostingDate ge datetime'2024-01-01T00:00:00').
      schema:
        type: string
    SkipParam:
      name: $skip
      in: query
      required: false
      description: Number of records to skip for pagination.
      schema:
        type: integer
        minimum: 0
        default: 0
  responses:
    Unauthorized:
      description: Unauthorized — invalid or missing credentials.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ODataError'
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic Authentication using SAP Business ByDesign user credentials.
    oAuth2:
      type: oauth2
      description: OAuth 2.0 authentication for SAP Business ByDesign.
      flows:
        clientCredentials:
          tokenUrl: https://{tenant}.bydesign.cloud.sap/sap/bc/sec/oauth2/token
          scopes: {}