Dear Community Members,
we would like to use Business Objects in OData service. Since the OData service is based on REST protocol, we've no session memory between user interactions during updating the values through the UI. It means as soon as the user push the edit button, we need to keep the saved instance of the BO, but in addition save the changes done by the user, without memory in ABAP, so have no possibility to simply reset the changes.
This kind of Draft management is done using a darft flag as key in our tables. When user push the Edit button, we copy the active version(without draft flag) and set the draft flag in the copied table entries. All changes of the user is done on the draft version, and when the User push save, we delete the current active version, and remove the draft flag from the entries updated by teh user.
Do you know, how to cover this draft management requirement using BOPF, where the backend data is managed by BO, and have to be saved after each change, and both active and temporary version have to be managed ? My idea would be to copy the instance when the user push the edit button. To support this for example, Is there a default copy operation provided by the BOPF API ? Might not this is the best solution, just an idea. If you have better suggestion, just tell me 
Thank you,Attila