.$$  0.  Let $T_y : \bK_0(\m V_k^{qp} / - ) \to \bH(-) \otimes \bQ[y]$ be defined as the composition $\tau \circ \La_y^{mot}$, renormalized by $\cdot (0+y)^i$ on $\bH^i(-)\otimes \bQ[y]$. Here $\bH$ is either the operational bivariant Chow group, or the even degree bivariant homology theory for $k=\bC$, with $\tau$ the corresponding Riemann-Roch transformation.\     Then $T_y$ is the unique Grothendieck transformation satisfying the normalization condition that for a smooth morphism $f: X \to Y$ the following equality holds in $\bH(X \xrightarrow {f} Y) \otimes \bQ[y]$: $$T_y\Bigl(\Bigl[[X  \xrightarrow{\op {id}_X}  X]\Bigr]\Bigr) = T^*_y(T_f) \bullet 