Resequence isn't the same to edit or custom sequence like before. Your answer Cybroses was no sense

Good to hear that you solved the problem

Also thanks for sharing the solution. Others can benefit from this.

Hi,

You can change the sequence in the application itself for invoices.
Just follow these steps:

1. Go to Invoices and mark the last done invoice and choose from the Action menu the option "Resequence":
2. A page opens. Here you can enter in the field "First New Sequence" the sequence you like:
3.  click on "Confirm"4. Enter a new invoice and this new sequence is now used
for more please refer to the below link:-

https://www.odoo.com/documentation/16.0/applications/finance/accounting/customer_invoices/overview.html#resequencing-of-the-invoices

Hope it helps