ITA - Fattura elettronica - Integrazione sconto triplo

This is a bridge module that installs itself automatically when both the Italian electronic invoice module and the triple discount module are present. It does not add any new menu or screen; it changes how the electronic invoice file is generated.

When you generate the Italian electronic invoice (XML) from an invoice that uses multiple discounts on its lines, the module reads each discount percentage on the line and writes a separate discount entry (ScontoMaggiorazione, type SC) for every discount that is not zero. Discounts equal to zero are skipped, and each percentage is formatted with two decimals.

It works by extending the electronic invoice export wizard (wizard.export.fatturapa) and by overriding the invoice line template used to build the XML, so the standard single-discount output is replaced by the list of all applicable discounts.

Business effect: the XML sent to the Italian tax authority reflects the real discounts applied on the invoice lines, keeping the electronic invoice consistent with the invoice content. No checks, emails or scheduled actions are added.