REST endpoint and payload for creating Inventory transfer

Endpoint: https://{accountid}.suitetalk.api.netsuite.com/services/rest/record/v1/inventoryTransfer

Payload

{
  "subsidiary": {
    "id": "7"// internal id of subsidiary
  },
  "location": {
   "id": "380" // internal id of the location
  },
  "transferLocation": {
    "id": "377" // internal id of the location
  },
  "inventory": {
    "items": [
      {
        "item": {
          "id": "1518758" // internal id of the item 
        },
        "adjustQtyBy": 1.0 // quantity
      },
    ]
  }
}