Feature Request:
Create the possibility to mantain a continuous invoice numbering series for processed invoices, allowing the release of the assigned invoice number of a draft invoice that has been deleted. Thus, the invoice number of the deleted invoice can still be used for invoices generated in the future -- addressing the issue of having gaps on invoice numbers of valid invoices.
Status: under evaluation
Reference Number: DE9610
Business Need:
* The Spanish law requires the existence of a continuous invoice numbering series of valid invoices.
* The current design in Z-Billing is that a definitive invoice number is used when the invoice is created, and if a draft invoice is deleted, the invoice number is not released, and it is maintained although the invoice doesn't exist. Whenever an invoice object has been created on a specific tenant or environment, the invoice number should be unique -- the invoice number that would be used when creating a new invoice should be unique regardless if the said invoice number is used by an existing invoice or a deleted invoice.
