Context filters
The purpose of a context filter is to limit the display of elements in a dialog box, based on a reference value selected as context.
With context filtering, you define a context field in the Layouts TSI and apply the context criteria for filtering. Depending on the value selected in the context field, the reference will be automatically filtered. Context filters can only be applied to reference fields, including free fields configured as reference fields.
* 
If you already have a user filter on the same field with different filter criteria, both filters will be applied. If the existing user filter has the same criteria, it will be overwritten by the context filter. It is possible to change the values applied via the context. However, on closing and reopening the dialog box, the context will be reapplied.
* 
For the procedure to add a Context filter, see Creating a context filter. For information on the Context filter field, see Field attributes.