Persistent class – Additional attributes

Hi,

How can I add additional attributes to a sap delivered Persistent
class without modification?

I extended the sap table ‘PPFTBOOK’ with the
help of new DDIC-Append with one field without any modification. In the Class builder the persistent class
‘CL_BOOK_PPF’ of the table ‘PPFTBOOK’ does display the new field. But the
screen ‘Persistence representation’ does not offer any enhancement operations.

The goal is to store the new enhanced field with the help of the persistent class without any modification.

Thanks a lot,

Fouad