I’m currently working on an interface between an Application built using MS Access and the Xero Accounting application using Xero’s API. It’s a seriously large application not some dinky little Access app. Xero are moving to oAuth 2.0 authentification. The deprecation of oAuth 1.0, which used Open-SSL for authentification, has presented some challenges. With 2.0 … Continue reading Xero API – Invoices