I am using ESRI’s REST API to create a new Web Map with WMS layers. I am trying to run the POST request http://{{domain}}/portal/sharing/rest/content/users/{{username}}/addItem with the following in the body: f: json title: testMap type: Web Map token: {{token}} text: { "operationalLayers": [ { "id": "wms_3449", "url": "http://mesonet.agron.iastate.edu/cgi-bin/wms/nexrad/n0r.cgi", "visibility": true, "visibleLayers": [ "nexrad-n0r" ], "opacity": 1, "title": "IEM WMS Service", "layerType": "WMS", "version": "1.3.0", "mapUrl": "http://mesonet.agron.iastate.edu/cgi-bin/wms/nexrad/n0r.cgi", "layers": [], "spatialReferences": [ 900913, 4326, 102100, 3857 ], "extent": [ [ -126, 24 ], [ -66, 50 ] ], "maxWidth": 2048, "maxHeight": 2048 } ], "baseMap": { "baseMapLayers": [ { "id": "defaultBasemap", "layerType": "ArcGISTiledMapServiceLayer", "url": "http://services.arcgisonline.com/ArcGIS/rest/services/ESRI_Imagery_World_2D/MapServer", "visibility": true, "opacity": 1, "title": "ESRI_Imagery_World_2D" } ], "title": "ESRI_Imagery_World_2D" }, "spatialReference": { "latestWkid": 4326 } } Note, the WMS layer is based on the ArcGIS example using a WMS layer as an operational layer here: https://developers.arcgis.com/web-map-specification/objects/wmsLayer/ . When I try to create this map, it initially says { "success": true, "id": "<whatever the id is>", "folder": null } However, whenever I try to view the map using Map Viewer, I get an error message saying “The map cannot be drawn completely because one or more layers are not supported. These layers will be omitted.” From Map Viewer, when I go to Add->Add Layer from Web->A WMS OGC Web Service and put in the url from the text above, namely http://mesonet.agron.iastate.edu/cgi-bin/wms/nexrad/n0r.cgi?REQUEST=GetCapabilities&SERVICE=WMS, I get the following error: The WMS service, http://mesonet.agron.iastate.edu/cgi-bin/wms/nexrad/n0r.cgi, cannot be added to the map. It is either not available or you have entered an invalid URL for the type of layer you want to reference. When I try to add this url manually, Fiddler says I got a 403 error when ArcGIS was trying to use a proxy for this request: GET /portal/sharing/proxy?https://mesonet.agron.iastate.edu/cgi-bin/wms/nexrad/n0r.cgi?SERVICE=WMS&REQUEST=GetCapabilities HTTP/1.1 Does anyone know what is causing these errors? I appreciate any feedback.
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