23.1 (January 26th)

Fixed issue where the Nigerian Naira (NGN) currency was not displaying.
Added means for Vertex Advantage Plus users to send a message for events that are in process.
Support for Stripe seating subscriptions has been added. See Subscriptions for Stripe.
Support for State Department ZIP codes in Washington has been added.
The Payment Reference field is now read only for non-custom payments for Vertex Advantage Plus customers.
Fixed issue where a quote with a blank payment reference field was processed in error.
Syntax check for Iceland updated to 10 digits.

23.3 (April 3rd)

Fixed issue in Vertex Advantage Plus where the filtering of remittance results was not correct.
Fixed unexpected behavior in some foreign currency exchanges.
Fixed issue with settlement report for Oman.
Restored ordering by status in Advantage Plus.
Quantity values are restricted for Stripe subscriptions.

Fixed issue where some postal codes caused an error in Vertex O Series.
You can now use the customer_id field to map values to the Customer Code field in Vertex O Series. See Mapping Company IDs to Customer Codes.
Corrected issue in Webhooks where incorrect settings could be applied.
Added flags for PSO to allow the allow adjustments to address processing. See Address Validation.
You can now process exemption certificates in your US transactions. See Exemption Certification.
Corrected unexpected error in rare circumstances for Foreign Exchange rate handling.
Added feature to process Tax IDs for recently closed businesses in South Korea.
Addressed issue that caused some inconsistencies in the Vertex Advantage Plus dashboard.
Fixed issue with nippy authorization token for Vertex O Series.

Support for Egypt has been added for Vertex Validator, Vertex for e-Commerce and Taxamo Assure.
Support for Tanzania has been added for for Vertex Validator, Vertex for e-Commerce and Taxamo Assure.
Admin panel updated to allow for scrollable search.
Footnote length in invoices is now limited to 256 characters.
Encoding check added to CSV file upload.
Foreign currency exchange rate sources for Mexico can now utilize 1000 units.
Corrected issue with Stripe Webhooks integration that caused errors to be generated.

Update to the Turkish VAT rate, which has changed from 18% to 20% from July 10th.

Addressed issue where the payment reference information was missing from the Filing Summary in some circumstances.
Fixed error where the Transaction Currency that is displayed for transactions in Taiwanese Dollars (TWD) in the Settlement report.
Removed text about indicative rates from Taiwanese invoices.

Added new Business-to-Business (B2B) reports for India.
Added a Consultation ID to the Bulk Upload feature for Vertex Validator that allows you to return the consultation information generated by services such as VIES.