hello ,
I`m facing an issue , when I create a sales order and navigate to the " Billing Document" tab, the field "Services rendered" is automatically populated with a date that we do not know how the system gets.
It´s always ( 17.09.2019) the same date and if we don´t navigate to this tab we don´t have this issue

we need to know where does the system gets the date from , because it may influence tax condition , pricing etc .
we also want to know how to hide or update this field with Billing date or pricing date.
Thank you in advance