{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/PurchaseOrderCreate",
  "title": "PurchaseOrderCreate",
  "type": "object",
  "description": "Request body for creating a new purchase order",
  "required": [
    "supplier",
    "currency",
    "lineItems"
  ],
  "properties": {
    "erpPONumber": {
      "type": "string",
      "description": "ERP system purchase order number",
      "example": "example_value"
    },
    "supplier": {
      "$ref": "#/components/schemas/SupplierReference"
    },
    "currency": {
      "type": "string",
      "description": "ISO 4217 currency code",
      "pattern": "^[A-Z]{3}$",
      "example": "example_value"
    },
    "paymentTerms": {
      "$ref": "#/components/schemas/PaymentTerms"
    },
    "purchaseOrg": {
      "type": "string",
      "description": "Purchasing organization identifier",
      "example": "example_value"
    },
    "purchaseGroup": {
      "type": "string",
      "description": "Purchasing group identifier",
      "example": "example_value"
    },
    "companyCode": {
      "type": "string",
      "description": "Company code",
      "example": "example_value"
    },
    "shipTo": {
      "$ref": "#/components/schemas/Address"
    },
    "billTo": {
      "$ref": "#/components/schemas/Address"
    },
    "lineItems": {
      "type": "array",
      "items": {
        "$ref": "#/components/schemas/PurchaseOrderLineItem"
      },
      "minItems": 1,
      "example": []
    },
    "requisitionId": {
      "type": "string",
      "description": "Reference to originating requisition",
      "example": "500123"
    },
    "contractId": {
      "type": "string",
      "description": "Reference to master agreement",
      "example": "500123"
    },
    "comments": {
      "type": "string",
      "description": "Header-level comments",
      "example": "example_value"
    }
  }
}