The Bean Provider must be aware of the potential sharing of objects passed through local interfaces. In particular, the Bean Provider must be careful that the state of one enterprise bean is not assigned as the state of another. In general, the references that are passed across local interfaces cannot be used outside of the immediate call chain and must never be stored as part of the state of another enterprise bean. The Bean Provider must also exercise caution in determining which objects to pass across local interfaces. This caution applies particularly in the case where there is a change in transaction or security context.