As for documentation purpose, during the process of issuing a Taxable Expense Lines would require at least a receipt to be attached. Considering how essential it is, hence at the release version of 2019.2, Netsuite added a checkbox option to enable/disable the warning message alert for attaching document receipt at the submission of Taxable Expense Line.

What's on the new feature

• Displays warning message regarding file attachment if the expense report line is passable.
• Does not need additional script for missing attachments.
• This setting toggles the warning for both UI and SuiteTalk Expense Reports.

How it Works

·Users receive a warning when creating Expense Reports with taxable lines without receipts. 

·This is a warning that does not prevent the creation of the record. This may be toggled on or off by navigating to Setup > Accounting > Accounting Preferences > Time & Expenses > SHOW WARNING MESSAGE FOR TAXABLE EXPENSE LINES WITHOUT RECEIPT.