An invoice is already present in the Archive or on the Confirmation status with the invoice number X for this relation
This error message occurs immediately when you open the Check screen. Based on the recognised creditor/debtor and the recognised invoice number it is seen that this invoice is already present in the TriFact365 Archive or on the status Confirmation. So you cannot post it again to the same creditor/debtor with the same invoice number. Click on View invoice to view the invoice that is in the archive.