How to display no invoice number in customer invoi

-- url of the page with the problem -- : www.urbanoutlet.it/abbigliamento-firmato-siena/
-- HikaShop version -- : 2.3.1
-- Joomla version -- : 2.5
-- PHP version -- : 5.4.24
-- Browser(s) name and version -- : Chrome and all others
-- Error-message(debug-mod must be tuned on) -- : Error_message

Hello. Since my customers has this e-commerce plus two other store, he would like to have the chance to add INVOICE number manually. How is that possible? Any suggestions

Hi,

That can be done by adding a custom field in the table "order", restrict it's display to "read only".
Then edit the views "order / invoice" (backend template) and "order / show" (frontend template) to remove the current invoice number and display the custom field value, value which can be set in the order edition page.

So it require PHP knowledges.

Which files .php are the ones to be modified?

Hello,
Note that the best solution will be to do directly do it through "Hikashop->Display->Views" by editing the code of the "Invoice" file of the "order" view of your back-end template.