Combo box

When you select a list element in a combo box, your selection is validated. If the selected element is not available (for example, it is defined in a variable that is not currently populated) the first available element is selected.

List validation results in the list being recalculated in these circumstances:

• The report is loaded.
• The report is recalculated.
• The list changes (for example, by a change to a variable on which the list depends).

This may reduce the performance of the report if there are many slice dimensions or if the lists are complex.

However, incremental calculation is used for lists in combo boxes: only the elements which are visible in the list are calculated. This reduces both the calculation time and the amount of data transferred between server and client.