According to Legislative Decree no. 127/2015, art. 1 and Decree Law 78/2010, art. 21, the Periodic VAT payment Communication (COMUNICAZIONE IVA PERIODICA CON PROSPETTO DI LIQUIDAZIONE) information must be transmitted electronically in XML format (Quarterly VAT communication "Lipe").
Implementation of Quarterly VAT communication in Microsoft Dynamics AX is described in KB #4020795.
On 21st of March 2018, Italian Inland Revenue is published newly with the related instructions and technical specifications. The new format must be used starting from the Lipe communication of the first quarter of 2018, to be submitted by the deadline of May 31, 2018 and will replace the communication model of the quarterly VAT returns approved with the provision of March 27, 2017.