Does fmAccounting Link (Xero Edition) support Xero Webhooks?
fmAccounting Link (Xero Edition) v2.1 supports Xero webhooks for both the contact and invoice event notifications (you can easily retrofit this into an earlier version or custom integrations as well). You can use the supplied PHP file to setup webhooks for either the FileMaker PHP API or the FileMaker Data API and have changes to contacts and invoices automatically pushed to the fmAccounting Link (Xero Edition) file (or your custom integration).
You can get further details and instructions on setting this up in our Webhooks Guide.
You can also use Claris Connect Webhooks. If you are a Claris Connect customer you can setup Webhooks in Claris Connect to receive incoming notifications from Xero for both invoices and contacts. This is usually a much simpler process than using the supplied PHP files for the FileMaker Data API as you don't need to worry about hosting the files and dealing with web servers, PHP configuration changes, port forwarding etc.
Please visit the Xero Webhooks Using Claris Connect guide for instructions on setting up Claris Connect Webhooks for Xero.