according to my need I have created a new custom detail by following these steps:-
1) I've created a new object for my detail.
2) Next, using detail wizard I have created a new detail using the created object and then I have added few fields and that detail I have added to my account section.
everything is working fine, but when I have tried to fill the fields and save first under same account it was saved, but using the same account I tried to another one by filling the fields then I got this error how can I get out of this
Violation of PRIMARY KEY constraint 'PKKOuATTzB7cDsHskkp5OVQlx5Jog'. Cannot insert duplicate key in object 'dbo.guptaCompanyFleet'. The duplicate key value is (cad50d15-f28d-49fc-aa79-21615ac35b86). The statement has been terminated.