This event is only relevant for views and only when the view contains fields from referred tables. It occurs when the contents of the referred fields must be changed. A different logic from the standard can be performed, e.g. to read display values from another table than that which is assigned.
The read-only field must be in a table referred to in the view
The standard routine COMPL_<view name> can serve as a model for this event. The view field list is available for the realization of the individual routines.