Error executing tool. Export Web Map Task : Web map has invalid JSON. Failed to execute (Export Web Map). Failed to execute (Export Web Map Task)

Question

Getting error when posting json data in Web Map as Json field.

Unable to complete operation.
Error executing tool. Export Web Map Task : Web map has invalid JSON. Failed to execute (Export Web Map). Failed to execute (Export Web Map Task).

Please see json data -

"mapOptions": {
"extent": {
"xmin": -12933906.537,
"ymin": 3993856.886,
"xmax": -12933371.998,
"ymax": 3994375.189,
"spatialReference": {
"wkid": 102100
}
},
"scale": 1234.5,
"rotation": -45,
"spatialReference": {
"wkid": 102100
},
"time": [
1199145600000,
1230768000000
],
"background": {
"color": [51, 227, 200, 255]
}
}

I did validate Json data and found no issues. This format is in sync with ExportWebMap specification—ArcGIS Server | Documentation for ArcGIS Enterprise

arcgis_error.png

JeffreyThompson2_1-1727787871859.png

Aled Wyn Jones · Accepted Answer

I believe you need to add some layers to be printed as well as define some exportOptions. There's a good example of WebMapAsJson available in this article:

https://support.esri.com/en-us/knowledge-base/how-to-publish-a-custom-print-service-with-embedded-cre-000026010

This is the Json:

{
   "mapOptions":{
      "showAttribution":true,
      "extent":{
         "xmin":-37570328.14272009,
         "ymin":-15552387.679177042,
         "xmax":37570328.14272009,
         "ymax":19552387.679177042,
         "spatialReference":{
            "wkt":"PROJCS[\"WGS_1984_Web_Mercator_Auxiliary_Sphere\",GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Mercator_Auxiliary_Sphere\"],PARAMETER[\"False_Easting\",0.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",0],PARAMETER[\"Standard_Parallel_1\",0.0],PARAMETER[\"Auxiliary_Sphere_Type\",0.0],UNIT[\"Meter\",1.0]]"
         }
      },
      "spatialReference":{
         "wkt":"PROJCS[\"WGS_1984_Web_Mercator_Auxiliary_Sphere\",GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Mercator_Auxiliary_Sphere\"],PARAMETER[\"False_Easting\",0.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",0],PARAMETER[\"Standard_Parallel_1\",0.0],PARAMETER[\"Auxiliary_Sphere_Type\",0.0],UNIT[\"Meter\",1.0]]"
      },
      "scale":147914381.897889
   },
   "operationalLayers":[
      {
         "id":"defaultBasemap",
         "title":"World Topographic Map",
         "opacity":1,
         "minScale":0,
         "maxScale":0,
         "url":"https://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer"
      }
   ],
   "exportOptions":{
      "outputSize":[
         670,
         500
      ],
      "dpi":96
   },
   "layoutOptions":{
      "titleText":"",
      "authorText":"",
      "copyrightText":"",
      "customTextElements":[
         {
            "Date":"12/9/2019, 9:17:04 AM"
         }
      ],
      "scaleBarOptions":{
         "metricUnit":"esriKilometers",
         "metricLabel":"km",
         "nonMetricUnit":"esriMiles",
         "nonMetricLabel":"mi"
      },
      "legendOptions":{
         "operationalLayers":[

]
      }
   }
}