Dynamics NAV/Business Central. Use own numbering on posted Sales invoices

Crazy right ? One of clients i support came up with that crazy idea. They wanted to manually capture the Posted sales invoice Numbers.
With Dynamics NAV/ Business Central default setup, Posted Number Series are added from Sales & Receivables setup.
Solution

• Add the "Posting No" to the sales order/sales invoice document page.
• Make sure the posting Nos. selected for Posting Numbers in sales & receivables setup allow manual numbers

The user can now add the posting number manually!

Cheers