Consider thiss scenario

DDL:
table X (id int primary key,
attrs...
)

table Y (id int primary key,
theX int foreign key references x.id,
attrs...
)
------------------------------------------------------

Client:

SSBA a=SSBAHome.create() <-- txn attr=required

a.x()

----------------------------------------------


SSBA::x <-- txn attr=required

EntityX x= XHome.create() <-- txn attr=required

Entity y=YHome.create(x) <-- txn attr=required establishes foreign key relationship


------------------------------------------------------
Why should this straightforward scenarion cause a txn timeout?

Can someome please explain this?