The answers to all your questions about Flaterp are here.
Yes. Flaterp's infrastructure provides you with E-invoice integration support.
E-Invoice and E-Ledger processes are available in our system. E-Invoice sending, incoming E-Invoices being pulled into the system and accounting records being easily transferred to the e-ledger are provided.
Yes, you can make cancellations and refunds at any time in the e-Invoice application.