What field does the tax rate get store in on a invoice record at the line level?

AI generated answer (using internal Slack threads):

The tax rate for each line item on an invoice record in NetSuite is stored in the 'taxrate1' field. This field is available at the line level of the invoice record. Please note that this field may not be visible or editable depending on your account setup and permissions. You can access this field using SuiteScript by referencing the 'taxrate1' field on the line item. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******