SPAIN- VAT RETURN FROM UNPAID INVOICES

Has anybody set up a process in JDE to manage the VAT return from unpaid customer invoices overdue more than a year?

According to legal requirements, it is possible to select all invoices unpaid for a year or more and greather than 300 eur and create new negative invoices, only for VAT amount, to declare them and receive this amount from tax authority.

I would like to know wich program do you use to select the invoices, how do you mark the original invoice as "selected to VAT return", how you create the new negative invoice (with new document type, new next number I guest, with VT code?), how do you print it? ...