var wmsLayer = new WMSLayer(wmsURL, { resourceInfo: resourceInfo, visibleLayers: ['aan'], spatialReference: new SpatialReference(28992) });
Hi - I'm having the same issue that IV Platformen was having (my posted question: https://community.esri.com/message/491878) and I tried setting the Spatial Reference explicitly for the wms layer as Jeff suggested, but I'm still getting the same results (WMS service getting called with CRS=EPSG:102100). Did anybody ever find a way to solve this issue?