{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "PurchaseOrderLineItem",
  "type": "object",
  "description": "A line item within a purchase order representing a specific good or service being procured",
  "properties": {
    "numberOnPO": {
      "type": "string",
      "description": "Line item number within the purchase order. Unique within the order."
    },
    "description": {
      "type": "string",
      "description": "Description of the item or service being purchased"
    },
    "quantity": {
      "type": "number",
      "description": "Quantity to purchase"
    },
    "buyerPartNumber": {
      "type": "string",
      "description": "Buyer-assigned part or material number"
    },
    "supplierPartNumber": {
      "type": "string",
      "description": "Supplier-assigned part or catalog number"
    },
    "manufacturerPartId": {
      "type": "string",
      "description": "Manufacturer part identifier"
    },
    "manufacturerName": {
      "type": "string",
      "description": "Name of the manufacturer"
    },
    "itemCategory": {
      "type": "string",
      "description": "Item category code distinguishing material, service, or other item types"
    },
    "accountCategory": {
      "type": "string",
      "description": "Account assignment category for the line item expenditure"
    },
    "needByDate": {
      "type": "string",
      "description": "Requested delivery date for the line item (ISO 8601 YYYY-MM-DD)"
    },
    "accountings": {
      "type": "array",
      "description": "Split accounting assignments for distributing costs across multiple cost objects"
    },
    "receivingType": {
      "type": "integer",
      "description": "Receiving type value indicating how receipts should be processed for this line item"
    },
    "taxCode": {
      "type": "string",
      "description": "Tax code per evaluated receipt settlement agreements"
    },
    "itemOnRequisition": {
      "type": "string",
      "description": "Line number of the corresponding item in the originating requisition"
    },
    "serviceStartDate": {
      "type": "string",
      "description": "Service period start date (for service line items)"
    },
    "serviceEndDate": {
      "type": "string",
      "description": "Service period end date (for service line items)"
    },
    "comments": {
      "type": "string",
      "description": "Additional comments or notes on the line item"
    }
  }
}