wrong reference when inserting

hello all

we are experiencing a weird case:

there are two schemas: A and B

both contains same pair of parent-child tables:  Parent and Child, and the fk constraint have the same name for both schemas (A.fk and B.fk)

Sometimes when user A tries  to insert into Child table and error rises :

ORA-02291: integrity constraint

and the error refers to B.fk whern the correct fk is A.fk

Does any one have had this kind of problem ??

tks