I am trying to put together a very basic sandbox app to load data from a public ArcGIS Server MapService using the Javascript 3.5 API.

However I keep getting the a 400 return status with the error "Output format not supported"

The code is as follows:

<!DOCTYPE html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Simple Image Service</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.25/esri/css/esri.css" />
  html, body, #map { height: 100%; width: 100%; margin: 0; padding: 0; }
<script src="https://js.arcgis.com/3.25/"></script>
  var map;
    "esri/map", "esri/layers/ArcGISImageServiceLayer", 
    "esri/layers/ImageServiceParameters", "dojo/parser", "dojo/domReady!"
  ], function(
    Map, ArcGISImageServiceLayer, 
    ImageServiceParameters, parser
  ) {

    map = new Map("map", {
      basemap: "topo",
      center: [-79.40, 43.64],
      zoom: 12

    var params = new ImageServiceParameters();
    params.noData = 0;
    var imageServiceLayer = new ArcGISImageServiceLayer("https://clientsServer/arcgis/rest/services/TEST/MyMapService/MapServer", {
      imageServiceParameters: params,
      opacity: 0.75
<div id="map"> </div>

Here is a screen shot of the Network tab in the dev tools enter image description here

I tried using the following but they also didn't display (I'm not sure what they mean, just found then in another post)

Most simple sandbox app ever, and already scratching my head.... :o(

Any help greatefully recieved

1 Answer 1


The problem is that you are trying to create an ArcGISImageServiceLayer layer based on a map service REST end point AND feeding ImageServiceParameters. The server then expects that this would be a map service with the imagery support, however, most likely yours is not one.

Most likely, you would need to use the ArcGISDynamicMapServiceLayer instead.


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