  We present the detailed analysis of genuine twist-3 contributions to the
exclusive electroproduction amplitude of transversely polarized vector mesons.
Using the formalism based on the QCD factorization in the momentum
representation we calculated all the genuine twist-3 terms and found the total
expression of this amplitude at 1/Q level. Generally speaking, these terms
violate standard factorization owing to the existence of the infrared
divergencies in the amplitude of hard sub-processes, although the strongest
divergencies cancel due to the QCD equations of motion. We discuss the possible
treatment of surviving divergencies.
