Create a puchase order

Example request

{
  "vendor_type": "integrated",
  "vendor_id": 1,
  "vendor_name": "some string",
  "tax_rate ": "some string",
  "title": "some string",
  "status": "draft",
  "payment_status": "unpaid",
  "comment": "some string",
  "order_at": 12345678,
  "expected_delivery_at": 12345678,
  "received_at": 12345678,
  "customer_id": 1,
  "job_id": 1,
  "project_id": 1,
  "invoice_id": 1,
  "assigned_id": 1,
  "order_email": "email@email.com",
  "delivery_method": "delivery",
  "delivery_address": "some string",
  "delivery_flat": "some string",
  "delivery_city": "some string",
  "delivery_state": "some string",
  "delivery_postcode": "some string",
  "delivery_instruction": "some string",
  "pickup_branch_id": "some string",
  "order_number": "O123",
  "order_phone": "+123456789",
  "items": [
    {
      "id": 1,
      "type": "fieldpulse",
      "unit_measure": "cm",
      "unit_cost": "1.0",
      "is_taxed": false,
      "tax_rate": "1",
      "quantity": "1",
      "payment_status": "unpaid"
    },
    {
      "id": 2,
      "type": "fieldpulse",
      "unit_measure": "cm",
      "unit_cost": "1.0",
      "is_taxed": false,
      "tax_rate": "1",
      "quantity": "1",
      "payment_status": "unpaid"
    }
  ]
}