Grantor application Using BOL

Hi

Can any one tell me how to create Grantor application through BOL programming?

I could create the header, but when I try to add the items its not saving. Its giving an error message telling one or more items could not be saved.

Can any one tell what all are the mandatory objects that need to be created.

I created the objects

1.Root Object BTOrder

2.Access Object BTAdminH

3.Dependent Object BTDocFlowSet >>Dependent Object BTDocFlow

4.Dependent Object BTOrgSet

5.Dependent Object BTPartnerSet >> Dependent Object BTPartner

6.Dependent Object BTPricingSet

Please help me to create items for the same.

Regards JP