{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "PurchaseOrderCreate",
  "type": "object",
  "description": "Request body for creating a new purchase order",
  "properties": {
    "erpPONumber": {
      "type": "string",
      "description": "ERP system purchase order number"
    },
    "currency": {
      "type": "string",
      "description": "ISO 4217 currency code"
    },
    "purchaseOrg": {
      "type": "string",
      "description": "Purchasing organization identifier"
    },
    "purchaseGroup": {
      "type": "string",
      "description": "Purchasing group identifier"
    },
    "companyCode": {
      "type": "string",
      "description": "Company code"
    },
    "lineItems": {
      "type": "array"
    },
    "requisitionId": {
      "type": "string",
      "description": "Reference to originating requisition"
    },
    "contractId": {
      "type": "string",
      "description": "Reference to master agreement"
    },
    "comments": {
      "type": "string",
      "description": "Header-level comments"
    }
  }
}