ITA - Fattura elettronica - Emissione - Dichiarazione d'intento

This is a technical bridge module that connects two Italian localization features: electronic invoice sending and declarations of intent. It does not add any new menu, screen or button; it only changes how the electronic invoice file is generated.

When an invoice is exported to the Italian e-invoice format, the module checks the declarations of intent linked to that invoice. For each invoice line that has a specific declaration of intent assigned, it adds an extra detail block to the line, marked with the type 'INTENTO', containing the declaration's telematic protocol number and its date.

If the invoice is linked to declarations of intent that are not already attached to individual lines, the module adds one extra zero-value line to the invoice body, described as 'Altre lettere d'intento' (other letters of intent), listing each remaining declaration with its protocol number and date. It also adds a matching summary block with 0.00 taxable amount and VAT, nature code N1 and the note 'Esclusa ex. Art. 15'.

This ensures the electronic invoice complies with the Italian anti-fraud rules for declarations of intent. The module installs automatically when both underlying modules are present and touches the invoice export templates only.