openapi: 3.1.0
info:
  title: IFS Cloud ERP API
  description: >-
    IFS Cloud ERP REST API providing integration with financial management,
    procurement, manufacturing, project management, and supply chain modules.
    IFS Cloud exposes OData-compatible REST endpoints for accessing business
    entities across energy, manufacturing, aerospace, and defense industry verticals.
  version: 22.1.0
  contact:
    name: IFS Support
    url: https://www.ifs.com/support/
  license:
    name: IFS License
    url: https://www.ifs.com/
externalDocs:
  description: IFS Cloud Documentation
  url: https://docs.ifs.com/

servers:
  - url: https://{tenant}.ifs.cloud/main/ifsapp/data
    description: IFS Cloud REST API (OData endpoint)
    variables:
      tenant:
        default: yourcompany
        description: IFS Cloud tenant identifier

security:
  - OAuth2: []

tags:
  - name: Finance
    description: General ledger, vouchers, and financial entities
  - name: Inventory
    description: Parts and inventory management

  - name: Procurement
    description: Purchase orders and supplier management
  - name: Work Orders
    description: Maintenance work orders and job management
paths:
  /VOUCHER_API:
    get:
      operationId: listVouchers
      summary: List accounting vouchers
      description: Returns general ledger voucher records. Supports OData $filter, $select, $orderby, and $top/$skip for pagination.
      tags: [Finance]
      parameters:
        - name: $filter
          in: query
          schema:
            type: string
          description: OData filter expression (e.g., "VoucherDate ge 2024-01-01 and AccountingYear eq '2024'")
        - name: $select
          in: query
          schema:
            type: string
          description: Comma-separated list of fields to return
        - name: $top
          in: query
          schema:
            type: integer
            default: 100
            maximum: 1000
        - name: $skip
          in: query
          schema:
            type: integer
            default: 0
        - name: $orderby
          in: query
          schema:
            type: string
      responses:
        '200':
          description: Voucher list returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/VoucherCollection'

  /VOUCHER_API(AccountingYear='{accountingYear}',VoucherType='{voucherType}',VoucherNo={voucherNo},Company='{company}'):
    get:
      operationId: getVoucher
      summary: Get a specific voucher
      description: Returns a single voucher by its composite key (accounting year, voucher type, voucher number, and company).
      tags: [Finance]
      parameters:
        - name: accountingYear
          in: path
          required: true
          schema:
            type: string
          description: Accounting year (e.g., "2024")
        - name: voucherType
          in: path
          required: true
          schema:
            type: string
          description: Voucher type code
        - name: voucherNo
          in: path
          required: true
          schema:
            type: integer
          description: Voucher number
        - name: company
          in: path
          required: true
          schema:
            type: string
          description: Company code
      responses:
        '200':
          description: Voucher returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Voucher'
        '404':
          description: Voucher not found

  /PURCHASE_ORDER_API:
    get:
      operationId: listPurchaseOrders
      summary: List purchase orders
      description: Returns purchase orders with support for OData filtering by order date, supplier, status, and site.
      tags: [Procurement]
      parameters:
        - name: $filter
          in: query
          schema:
            type: string
          description: OData filter (e.g., "OrderDate ge 2024-01-01 and OrderStatus eq 'Released'")
        - name: $top
          in: query
          schema:
            type: integer
            default: 100
        - name: $skip
          in: query
          schema:
            type: integer
            default: 0
        - name: $select
          in: query
          schema:
            type: string
        - name: $expand
          in: query
          schema:
            type: string
          description: Navigation properties to expand (e.g., "PurchaseOrderLines")
      responses:
        '200':
          description: Purchase orders returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PurchaseOrderCollection'

  /PURCHASE_ORDER_API(OrderNo='{orderNo}'):
    get:
      operationId: getPurchaseOrder
      summary: Get purchase order
      description: Returns a specific purchase order by order number including lines, header data, and delivery schedule.
      tags: [Procurement]
      parameters:
        - name: orderNo
          in: path
          required: true
          schema:
            type: string
          description: Purchase order number
        - name: $expand
          in: query
          schema:
            type: string
      responses:
        '200':
          description: Purchase order returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PurchaseOrder'
        '404':
          description: Purchase order not found

  /WORK_ORDER_API:
    get:
      operationId: listWorkOrders
      summary: List work orders
      description: Returns IFS maintenance work orders (WOs) with filtering by status, site, maintenance organization, and object.
      tags: [Work Orders]
      parameters:
        - name: $filter
          in: query
          schema:
            type: string
          description: OData filter (e.g., "WoStatus eq 'Released' and ContractId eq 'SITE1'")
        - name: $top
          in: query
          schema:
            type: integer
            default: 100
        - name: $skip
          in: query
          schema:
            type: integer
            default: 0
      responses:
        '200':
          description: Work orders returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WorkOrderCollection'

  /WORK_ORDER_API(WoNo={woNo}):
    get:
      operationId: getWorkOrder
      summary: Get work order
      description: Returns a specific maintenance work order by work order number.
      tags: [Work Orders]
      parameters:
        - name: woNo
          in: path
          required: true
          schema:
            type: integer
          description: Work order number
      responses:
        '200':
          description: Work order returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WorkOrder'
        '404':
          description: Work order not found

  /PART_CATALOG_API:
    get:
      operationId: listParts
      summary: List parts from part catalog
      description: Returns parts from the IFS part catalog with inventory balances and descriptions.
      tags: [Inventory]
      parameters:
        - name: $filter
          in: query
          schema:
            type: string
        - name: $top
          in: query
          schema:
            type: integer
            default: 100
        - name: $skip
          in: query
          schema:
            type: integer
            default: 0
      responses:
        '200':
          description: Parts returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PartCollection'

components:
  securitySchemes:
    OAuth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://login.ifs.cloud/oauth2/authorize
          tokenUrl: https://login.ifs.cloud/oauth2/token
          scopes:
            ifs.read: Read IFS data
            ifs.write: Write IFS data

  schemas:
    Voucher:
      type: object
      properties:
        Company:
          type: string
          description: Company code
        AccountingYear:
          type: string
        VoucherType:
          type: string
        VoucherNo:
          type: integer
        VoucherDate:
          type: string
          format: date
        Description:
          type: string
        Function:
          type: string
        Amount:
          type: number
          format: double
        CurrencyCode:
          type: string
        Objstate:
          type: string
          description: Voucher state (e.g., Preliminary, Approved, Confirmed)
        UserGroup:
          type: string
        VoucherRows:
          type: array
          items:
            $ref: '#/components/schemas/VoucherRow'

    VoucherRow:
      type: object
      properties:
        RowNo:
          type: integer
        Account:
          type: string
        CostCentre:
          type: string
        ProjectId:
          type: string
        Quantity:
          type: number
        Amount:
          type: number
          format: double
        CurrencyAmount:
          type: number
          format: double
        Text:
          type: string
        AccountingPeriod:
          type: integer

    VoucherCollection:
      type: object
      properties:
        '@odata.context':
          type: string
        '@odata.count':
          type: integer
        value:
          type: array
          items:
            $ref: '#/components/schemas/Voucher'

    PurchaseOrder:
      type: object
      properties:
        OrderNo:
          type: string
        Contract:
          type: string
          description: Site/contract code
        VendorNo:
          type: string
        VendorName:
          type: string
        OrderDate:
          type: string
          format: date
        WantedDeliveryDate:
          type: string
          format: date
        OrderStatus:
          type: string
          enum: [Planned, Released, Closed, Cancelled]
        TotalOrderAmount:
          type: number
          format: double
        CurrencyCode:
          type: string
        PurchaseOrderLines:
          type: array
          items:
            $ref: '#/components/schemas/PurchaseOrderLine'

    PurchaseOrderLine:
      type: object
      properties:
        LineNo:
          type: integer
        PartNo:
          type: string
        Description:
          type: string
        OrderedQty:
          type: number
        ReceivedQty:
          type: number
        RemainingQty:
          type: number
        BuyUnitPrice:
          type: number
          format: double
        LineTotal:
          type: number
          format: double

    PurchaseOrderCollection:
      type: object
      properties:
        '@odata.context':
          type: string
        '@odata.count':
          type: integer
        value:
          type: array
          items:
            $ref: '#/components/schemas/PurchaseOrder'

    WorkOrder:
      type: object
      properties:
        WoNo:
          type: integer
        Description:
          type: string
        ContractId:
          type: string
          description: Site/contract code
        MchCode:
          type: string
          description: Maintenance object (equipment) code
        WoStatus:
          type: string
          enum: [Prepared, Released, Work Done, Finished, Cancelled]
        WoType:
          type: string
          description: Work order type
        Priority:
          type: integer
          minimum: 1
          maximum: 10
        EarlyStart:
          type: string
          format: date
        EarlyFinish:
          type: string
          format: date
        ActualStart:
          type: string
          format: date-time
        ActualFinish:
          type: string
          format: date-time
        CostAmount:
          type: number
          format: double
        OrgCode:
          type: string
          description: Maintenance organization code
        EmployeeId:
          type: string

    WorkOrderCollection:
      type: object
      properties:
        '@odata.context':
          type: string
        '@odata.count':
          type: integer
        value:
          type: array
          items:
            $ref: '#/components/schemas/WorkOrder'

    Part:
      type: object
      properties:
        PartNo:
          type: string
        Description:
          type: string
        UnitMeas:
          type: string
          description: Unit of measure code
        PartType:
          type: string
          enum: [PURCHASED, MANUFACTURED, NOT_APPLICABLE]
        DangerousGoodsClass:
          type: string
        NetWeight:
          type: number
        GrossWeight:
          type: number

    PartCollection:
      type: object
      properties:
        '@odata.context':
          type: string
        '@odata.count':
          type: integer
        value:
          type: array
          items:
            $ref: '#/components/schemas/Part'