How to hide "Our reference " in free text invoices report?

Accounts Receivable->Invoices->All free text Invoices

Go to Invoices tab->Under document->view->Copy

In that report i want to trace back"Our reference" field path and where it is fetching data or whether the field exists or not ?

please reply

It is from sales order header. Field - Sales taker.
You can find the same info by looking at the report design.

Can you tell me the report name or navigate the path!, as this d365 is new interface to me

It is \SSRS Reports\Reports\FreeTextInvoice in AX 2012. I don’t have 365 right now to check.