arazzo: 1.0.1
info:
  title: Workday Finance Requisition to Purchase Order
  summary: Find an approved requisition, confirm the supplier, then raise a purchase order.
  description: >-
    Advances a purchase requisition into the ordering stage. The workflow lists
    requisitions, branches on whether any were returned, confirms the supplier
    is active, and creates a purchase order against that supplier. Each step
    spells out its request inline so the flow can be read and executed without
    opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: procurementApi
  url: ../openapi/workday-finance-procurement-openapi.yml
  type: openapi
workflows:
- workflowId: requisition-to-purchase-order
  summary: Move an approved requisition forward by raising a purchase order.
  description: >-
    Lists requisitions, confirms the supplier is active, and creates a purchase
    order with the supplied order lines against that supplier.
  inputs:
    type: object
    required:
    - token
    - supplierId
    - lines
    properties:
      token:
        type: string
        description: OAuth 2.0 bearer access token for the Workday tenant.
      supplierId:
        type: string
        description: The supplier identifier to raise the purchase order against.
      orderDate:
        type: string
        description: The order date for the purchase order (YYYY-MM-DD).
      lines:
        type: array
        description: The order lines (item, quantity, unitCost) for the purchase order.
  steps:
  - stepId: listRequisitions
    description: >-
      List purchase requisitions and branch on whether any requisitions are
      available to advance.
    operationId: listRequisitions
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.token
    - name: limit
      in: query
      value: 100
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      requisitions: $response.body#/data
      total: $response.body#/total
    onSuccess:
    - name: requisitionsFound
      type: goto
      stepId: getSupplier
      criteria:
      - context: $response.body
        condition: $.data.length > 0
        type: jsonpath
    - name: requisitionsMissing
      type: end
      criteria:
      - context: $response.body
        condition: $.data.length == 0
        type: jsonpath
  - stepId: getSupplier
    description: >-
      Confirm the supplier exists and is active before raising a purchase order
      from the requisition.
    operationId: getSupplier
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.token
    - name: supplierId
      in: path
      value: $inputs.supplierId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      supplierId: $response.body#/id
      status: $response.body#/status
  - stepId: createPurchaseOrder
    description: >-
      Create a purchase order against the confirmed supplier using the supplied
      order lines.
    operationId: createPurchaseOrder
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.token
    requestBody:
      contentType: application/json
      payload:
        supplier: $steps.getSupplier.outputs.supplierId
        orderDate: $inputs.orderDate
        lines: $inputs.lines
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      purchaseOrderId: $response.body#/id
      purchaseOrderNumber: $response.body#/purchaseOrderNumber
      status: $response.body#/status
  outputs:
    requisitionTotal: $steps.listRequisitions.outputs.total
    purchaseOrderId: $steps.createPurchaseOrder.outputs.purchaseOrderId
    purchaseOrderStatus: $steps.createPurchaseOrder.outputs.status