Cin7 Status Page - Cin7 Core customers integrating Avalara and Xero are getting the error "Tax rule Exempt Sales is not applicable for sales" when authorizing sale orders – Incident details

We are continuing to work on a fix for this issue.; Meanwhile there is a workaround for customers where the tax type can be changed to "Tax on Sales" and by reducing the frequency of syncs with Xero, ideally via manual sync at longer intervals to avoid the tax type being over-ridden by Xero

As a temporary workaround, please update the tax type on the “Exempt Sale” rule to “Tax on Sales.”

To help prevent this setting from reverting before the fix is released, we recommend reducing the frequency of Xero syncs where possible. If auto-sync is enabled, consider temporarily disabling it and using manual syncs only.

Please note that running a sync may reset the tax type setting. If this occurs, you’ll need to reapply the change before creating any additional sales orders.