Field help (APROMAP) 

The last two fields of the grid, Parent property and Constant value, are used to define values that have to be assigned automatically to the children properties during the CRUD operation. This will automatically generate the corresponding propagation rules, and an initialization rule ("ADDLINE" event). A value can be defined as:

SEEINFONote that only one of these two fields can be filled.If none is filled, no automatic assignment will be done.This is usually the case with the last key element.