If the parameter for a Filter is known to always be the same, a Predetermined value can be configured for that filter.
If a filter has predetermined values, the effect is that any parameters given to this filter by the user or client code are ignored.
Predetermined values are defined during creation of a filter:
They can be edited or removed in the The Details panel.
Example of a filter, that always filters out results, which do not have an item_metafield.name Like "*key":