RAP - Document with items - managed with draft but non UUID keys

[michaltvrdy74]

I have scenario :

- document with items (managed with unmanaged save).

Since there is not possible to create whole document with items in one, I have tried to use scenario with DRAFT.

But, there is a big problem. I'm not using UUID in my tables as a key. And, as a result, whenever I want to create second item, program terminates with short dump (create instance twice). Resp. when I want to create new document (and one draft exists), the program terminates with short dump "duplicate key".

I tried to use "late numbering" (system creates a new field with UUID in draft table), but late numbering starts during the save operation - and that why the same errors occurs in moment of creating document/new item.

Does anybody have some idea how to fill field "DRAFTUUID" in draft table ? Or is it possible using draft concept without UUID ? I read several blogs but on every one is used UUID ...

I'm creating app for on-premise system, that's why I cannot use early numbering feature ...

Thanks.

[Ramjee_korada]

Hi Michal,

Please see below discussions if not already.

https://blogs.sap.com/2022/03/13/abap-restful-application-programming-unmanaged-draft-for-non-guid-k...
https://blogs.sap.com/2022/03/16/how-to-develop-an-unmanaged-draft-enabled-rap-business-object-with-...

Best wishes,

Ramjee Korada

[michaltvrdy74]

Thnks fo your reply.

Both of the links I already know. But none of them works :

1. It is possible only for standalone entity. But I have an entity with compositions and changing the key in CDS results in errors

2. Early numbering works only on BTP (cloud). Early numbering on on-premise results in errors.