Choose which Fortnox field Junipeer uses to find the original invoice for a refund.
This is needed when the original invoice or order was not created by this integration, for example orders from before you started using Junipeer.
Options
DocumentNumber (ID)
ExternalInvoiceReference1
ExternalInvoiceReference2
YourOrderNumber
Good to know
When the reference is looked up on an order, Junipeer searches for the refund's order ID. Otherwise it searches for the refund's invoice ID.