Error message: [Order number] Invoice not of valid status for modification
100001012: Export did not succeed Errors received from Xero: A validation exception occurred Invoice not of valid status for modification
This error message indicates that
- Xero already has this invoice number (from Magento or other source) and
- and a payment has been applied against it.
Any further changes to that invoice are then prevented by Xero with the above error message. We suggest taking a look at the invoice history in Xero (see below) to establish if this invoice had already been exported by our integration, was possibly exported wrongly from a test site (we suggest connecting any test/staging/dev sites to a Xero demo organisation to prevent this from happening) or is genuinely a double up of order numbers.