Dat klopt inderdaad.
Een voorbeeld van een request die we proberen te maken is:
https://geodata.nationaalgeoregister.nl/kadastralekaart/wms/v4_0?filter=<Filter><And><PropertyIsGreaterThanOrEqualTo><Function name="area"><PropertyName>begrenzingPerceel</PropertyName></Function><Literal>1</Literal></PropertyIsGreaterThanOrEqualTo><PropertyIsLessThanOrEqualTo><Function name="area"><PropertyName>begrenzingPerceel</PropertyName></Function><Literal>500</Literal></PropertyIsLessThanOrEqualTo></And></Filter>&service=WMS&request=GetMap&layers=Perceelvlak&styles=&format=image%2Fpng&transparent=true&version=1.3.0&width=256&height=256&crs=EPSG:3857&bbox=565939.7574234451,6818794.419264007,566245.5055365858,6819100.167377147
De foutmelding die we krijgen is:
<?xml version='1.0' encoding="UTF-8" standalone="no" ?>
<ServiceExceptionReport version="1.3.0" xmlns="http://www.opengis.net/ogc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/ogc http://schemas.opengis.net/wms/1.3.0/exceptions_1_3_0.xsd">
<ServiceException code="InvalidParameterValue">
msWMSApplyFilter(): WMS server error. Invalid or Unsupported FILTER : <Filter><And><PropertyIsGreaterThanOrEqualTo><Function name="area"><PropertyName>begrenzingPerceel</PropertyName></Function><Literal>1</Literal></PropertyIsGreaterThanOrEqualTo><PropertyIsLessThanOrEqualTo><Function name="area"><PropertyName>begrenzingPerceel</PropertyName></Function><Literal>500</Literal></PropertyIsLessThanOrEqualTo></And></Filter>
</ServiceException>
</ServiceExceptionReport>