Error message: The payment date cannot precede the invoice date

This is an error message one might encounter in Fortnox during the reconciliation of payments. Fortnox does not permit the payment date to precede the invoice date, which prevents the invoice from being reconciled by the integration. Consequently, payments that trigger this error will need to be manually recorded in Fortnox.

To prevent this issue, you as a customer should ensure that your invoices set to be reconciled in Fortnox have an invoice date that precedes the payment date of the transactions to be reconciled.

This error can likely either originate from a manual error or a error with our integration.