Fix a compact almost Calabi-Yau manifold $X$. The Solomon functional is well defined for graded immersed unobstructed Lagrangians in the same $D^{b}Fuk(X)$ class of a reference Lagrangian $L_{0}$, satisfying

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  The change of reference Lagrangian formula (22) holds,

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  Gauge equivalent bounding cochains give rise to the same functional,

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  Cohomologous choices of $HF^{0}$ generators $\alpha,\beta$ give rise to the same functional,

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  The first variation formula (21) holds for any 1-parameter exact isotopy of unobstructed Lagrangians.