Below you can find a list of common errors, their causes, and steps to resolve: Contacts Sync...Custom Contact Link
You can create a custom link to allow you to click from your Xero contact to WHMCS.To do this,...FAQ
Q. How do I find my 'Next Transaction ID'? A. In WHMCS, go to 'Billing' -> 'Transaction...Installation & Upgrade Instructions
Installing the module is a straightforward process, simply follow the steps below and feel free...Setting up the Cron Job
By default, you can enable the sync to take place automatically when the WHMCS daily cron job...Setting up WHMCS Payment Sync
For invoices to be automatically marked as paid in Xero, you must specify Payment Gateway...