What does "This invoice is already in Xero and cannot be modified." mean?
You get the error "This invoice is already in Xero and cannot be modified" when the invoice was already exported from Datamolino to Xero and approved (or voided) in Xero. We do not overwrite approved (or voided) invoices in Xero. Only documents that are still in Drafts can be re-exported from Datamolino.
This is a precaution to keep your data safe in Xero and not creating duplicates.
How to fix the "This invoice is already in Xero and cannot be modified" error?
Steps to fix "This invoice is already in Xero and cannot be modified" error:
Delete/void an invoice in Xero
Delete the invoice in Datamolino
Re-upload the invoice to Datamolino
Export to Xero
---
To review the status of a document in Xero, just dismiss the error and click the blue-ish Xero icon. It will take you to Xero, scroll down and you will see the status in the lower left corner.
Document in Datamolino:
Document in Xero:
