Info Display

Use QGIS to determine whether the layer also causes its project file to load slowly. Observe the progress bar at the bottom to see if any layers are taking more than a fraction of a second to load in QGIS. If it appears that a layer is taking longer, check the source data. Also check how long it takes for QGIS to show the dataset’s table view (Layer > Open Attribute Table). Check that any join fields are properly indexed.

This can happen when querying a large selection because IIS has a default limit to the request length it will accept.

Include this <security> section in the IIS QGIS Server web.config file to allow longer requests:

    <system.webServer>
        <security>
            <requestFiltering>
                <requestLimits maxQueryString="32768"/>
            </requestFiltering>
        </security>
    </system.webServer>

• check that the layer is enabled for WFS. In QGIS, go to Project > Properties > QGIS Server > WFS Capabilities > your dataset > Published (tick on), then Save the project
• ensure the parent keyword value is configured accurately with the parent dataset name

• in Pozi, click on a parent feature for which you know a child feature exists
• check that the names of the fields in the child and parent datasets that are used for the link are consistent with the names supplied with the child dataset’s registration in Pozi
• check that there are no double quotes in the parameter setting