Why didn't my single use exemption certificate apply?

Overview

I used a single use exemption certificate and the certificate did not apply to the invoice

Environment

Avalara AvaTax

Resolution

• Make sure the PO number used on the invoice matches what is entered in the PO field of the exemption certificate
  • Only the last PO number added to the single use certificate is valid-- which is to say the first PO number in the list on the certificate is the PO number that will be used to apply the certificate.
• The effective date of the exemption certificate must be on or before the date of the invoice.