Already included in Project & Service Management (P&SM)
Customers who license P&SM get e-invoicing included.
Our Project & Service Management (P&SM) app contains this E-Invoicing module out-of-the-box. IT service firms, consultancies, and smaller PSA setups using P&SM do not need to license the e-invoicing function separately — it is part of the package.
For all others — existing D365 CE installations with Sales, Customer Service, Field Service or custom industry apps — the module is licensable as a standalone Dataverse solution.