Thank you for your response. I tried to resequence but the problem persists. If I display only the year, there will be a reset at the change of year, but if I display the month, the reset occurs monthly as explained in my following screenshot. My wish is to never reset the sequence number.

Hi,
From the invoice tree view, re sequence the invoice number as per the need.

* Enable developer mode
* Select the invoices from tree view
* Click resequence from the action button

Thanks