I my experience working with this model, I saw what they do and create my own. So I recommend that you do the same, because it's possible that you need more flexibility working with this data.
In summary, the base tables to create your model are
VBAK | VBAP = for Sales Document
VBRK | VBRP = for Billing Document
Thanks for the reply.
I have created the dashboards with my own and working great but when I shown this demo to users they want the same also.
And I thought I have qvd generator and everything working well only some table i need to add and put some conditions on existing. That's y was thinking if it is possible or not.
If not then it's ok.
Not an issue.