How do I resolve ‘Reference Error: NlapiGetNewRecord is not defined’ in NetSuite when I save a custom invoice?

Overview

When I save my custom invoice, I am getting an error window that says ‘Reference Error: NlapiGetNewRecord is not defined’. How do I resolve this?

Environment

NetSuite

Resolution

• Load the form
  • Navigate to Customize > Customize Form
    • Navigate to the Screen Fields tab
      • Navigate to the Columns tab
      • Locate the TAX option and put a check in the box to show it
    • Save