Only one "child to parent" association allowed

[lfrey91]

Hi All,

i am not sure if the title explains my problem. (CDS Error Mssg.)

I am Developing a Cockpit for Project, Phase and Tasks.

A Project can have [1..*] Phases

A Project can have [1..*] Tasks

A Phase can have [1..*] Tasks

A Task can have [1..*] Tasks

Why isnt it possible to give one child entity multiple parent entitys?

here i have exact this scenario...

Once i come from Proj.toTask and

Once i come from Phase.toTask

so Task has here two Parents... Proj and Phase...

Thanks for Help,

Luis