How to set the date of the invoice to be the same as the sales order date when bulk billing

When bulk billing, the invoice dates will follow the date specified on the Date field on the Bill Sales Orders page.

To set the date of the invoice to be the same as the sales order date, leave the Date field blank on the Bill Sales Order page (Transactions > Sales > Bill Sales Orders).

Notes:

This solution is applicable only if the sales order has no billing schedule and the Base Invoice Date on Billing Schedule Date preference is enabled at Setup > Accounting > Accounting Preferences > Order Management tab.

With this solution, the posting period will follow the period of the sales order date or the next open period. If Allow Transaction Date Outside of Posting Period preference is set to Disallow (Setup > Accounting > Accounting Preferences > General), the invoices will not be saved.