Hi Guido,One thing to note is that the layer service in question doesn't have "support statistics" enabled. See the first Note on the outStatistics section of the doco and see the service definition here.Secondly, in your web interface example above, you are not encapsulating your outStatistics value as an array. You should wrap it in []:[{
"statisticType": "count",
"onStatisticField": "Status",
"outStatisticFieldName": "StatusCount"
}]
Perhaps you can get Brandon to enable statistics on the service and then you should be good to go.Let me know if that helps. However, I feel the error message could be a lot better and I'll see if I can log an issue with the right team.Nick.