Parameter	Mandatory	Description	Examples	More Info
API	Yes	The API area	expenselines.json
General	Yes	Parameters described in overview	user=user&password=user	Structure of an API call
Company	Yes	The company number	company=1
Action	Yes	The action to perform	action=attachmentview
Identifier	Yes	Expense line ID or UUID	expenseline=3404

Example request:

http://<SERVER>/jsonAPI/expenselines.json?user=user&password=user&version=4&company=1&action=attachmentview&expenseline=4022

Example response:

{
  "responsecode": 1,
  "responsestatus": "OK",
  "errorcode": 0,
  "errormessage": "",
  "totalrows": 1,
  "totalpages": 1,
  "responsemessage": "",
  "pagerows": 0,
  "pagenumber": 1,
  "success": true,
  "data": [
    {
      "attachmentUuid": "96718E76A5624745B535E0371C6B4B1F",
      "attachmentTimestampModified": 1523968717,
      "attachmentRecordVersionNumber": 0,
      "attachmentOriginalFilename": "office.txt",
      "attachmentBase64": "ZnJvbSBUOlxTdXBwbGllclxNaWNyb3NvZnRcT2ZmaWNlIDIwMTYgUHJvZmVzc2lvbmFsXCAgVGhlIGxpY=",
      "attachmentContentDisposition": "attachment; filename=\"doc.txt\"",
      "attachmentContentType": "application"
    }
  ]
}