Use of Search Help Exits for Suggested Value Lists
A search help exit can be called from the Web Dynpro framework to ascertain either the suggested value list or the results list of the value help popup.
The variant in which it is called can be specified in CL_WEB_DYNPRO=>valuehelpinfo-valuesuggest. Possible values are: abap_true and abap_false
A search help exit can search across multiple columns. To do this, you set CL_WEB_DYNPRO=>valuehelpinfo-suggestfiltercolumn = '01' (allColumns)
The suggested value list is displayed in two columns only: The first column is the key column, the second contains the description.
The key column contains the user input, the description column contains a list of the rest of the column content. Each cell is separated by a comma and a space (see figure).
If suggestFilterMethod = prefixSearch is set, only the first two columns are searched. Use suggestFilterMethod = containsSearch if you want to search in all the columns.