In PiSA cubes, the interface PSC_IFC_FIX_ACC is used. A DTO with this interface additionally gets the field PSC_FIX_ACC. To this field, accesses can be written that are then always added to the new access string (PSC_ACC). This makes it possible to grant a contact permanent access that cannot be withdrawn by access inheritance of the process concerned.
In the access form, there is an additional column in the sublists (Fixed) if the underlying DTO has this interface. In this column, a lock is displayed. With fixed access, the lock is closed, otherwise it is open. The state can be toggled by means of a hyperlink.