Transactions - GAE - One<T> Realtion

[Gilles Van Caneghem]

Hello,

I'm trying to use transactions and got a weird problem.

Im saving an Object O1 wihch have :

     - Many O2

     - One O1

as children.

I have an error when im trying to save in the same transaction O1,O2,O3.

"can't operate on multiple entity groups in a single transaction.found both Element [ O1 and O3] "

but no error when im trying with O1 & O2.

Is there a problem with the One<T> relation ?

thanks

[Gilles Van Caneghem]

Excuse me ...

O1 which has :

  - Many O2

  - One O3

as children