"Acchianare" (from which the noun "acchianata", the action of) sounds to me a dialect (from the Neaples area) verb meaning: smooth off, put a remedy to. In this case it would refer to a compulsory reconciliation attempt that Italian divorce law provides for before the judge gives his/her pronouncement.
Why would a lawyer put such a term in his CV frankly beats me, at best it displays deep ignorance of his own technical language.