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We revisit the reduction of type II supergravity on SU(3) structuremanifolds, conjectured to lead to gauged N=2 supergravity in 4 dimensions. Thereduction proceeds by expanding the invariant 2- and 3-forms of the SU(3)structure as well as the gauge potentials of the type II theory in the same setof forms, the analogues of harmonic forms in the case of Calabi-Yau reductions.By focussing on the metric sector, we arrive at a list of constraints theseexpansion forms should satisfy to yield a base point independent reduction.Identifying these constraints is a first step towards a first-principlesreduction of type II on SU(3) structure manifolds.Comment: 20 pages; v2: condition (2.13old) on expansion forms weakened,  replaced by (2.13new), (2.14new

Towards reduction of type II theories on SU(3) structure manifolds