How to input the Auto invoice FBDI template to have "Exempt, Manual" exemption handling?

Summary:

We are NOT going to setup tax exempt profile in customer site level, so we are using the following information to create manual AR invoice in oracle which is fine.

Exemption Handling: Exempt, manual

Certificate Num: ABC1 {free text num}

Reason: Exempt due to amount

However, we do not know how to input the FBDI to have the tax exemption information like above.

I tried Tax Exempt=E, Tax Exemption Reason Code=Amount & Tax Exemption Certificate=ABC1 {free text num} but cannot do the upload. Please see the error msg per the Import AutoInvoice Execution Report:

Enter Exempt for tax_exempt_flag only if tax exempt_number exists and Transaction Tax: Allow Override of Customer Exemptions profile option is set to Yes (E, ABC1)