Hi,
Xero now supports backorders for tracked inventory.
https://central.xero.com/0/article/About-backorders-for-tracked-inventory?userregion=true
Since August 2026 the Xero API has accepted an `allowBackorders=true` query parameter on the Invoices endpoint. Without it, an invoice that would take a tracked item below zero stock is still rejected.
The current Xero integration with this plugin doesn’t send this parameter, and there’s no filter we can use to add it to the request URL.
Could you please Let us know if this is planned, and if so roughly when?
Regards,
Last updated: November 2, 2026
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