{
  "operationId": "updatePurchaseOrderAttachmentByFileName",
  "method": "POST",
  "path": "/PurchaseOrders/{PurchaseOrderID}/Attachments/{FileName}",
  "summary": "Xero Updates a specific attachment for a specific purchase order by filename",
  "requestExamples": [],
  "responseExamples": [
    {
      "status": "200",
      "contentType": "application/json",
      "example": {
        "Id": "aeff9be0-54c2-45dd-8e3d-aa4f8af0fbd7",
        "Status": "OK",
        "ProviderName": "Xero API Partner",
        "DateTimeUTC": "/Date(1602100086197)/",
        "Attachments": [
          {
            "AttachmentID": "dce4eaa7-c8a9-4867-9434-95832b427d3b",
            "FileName": "xero-dev.png",
            "Url": "https://api.xero.com/api.xro/2.0/PurchaseOrders/93369c9b-c481-4e21-aaab-bb19e9a26efe/Attachments/2D_2.png",
            "MimeType": "image/png",
            "ContentLength": 98715
          }
        ]
      }
    }
  ]
}