Used in combination with the dialogtype property to configure information on how to present data items.

If the DialogType property is configured to Map, the DialogData should refer to the data item to which the geography data is configured (feature-attribute). This is needed to inform the GeoDMS how to visualise the geography domain unit of the requested data item.

The DialogData property can also be configured for a values-unit describing the coordinate system used for map views. In that case the DialogData can be configured with one or multiple attribute(s) referring to geographic information. These attributes will then be grouped into a background layer that is by default presented in each map view.

If the feature attribute is called (G)(g)eometry, this property does not have to be configured (since version 7.206).