Hi Oskar, thank you for answering.   But I need to retrieve this specific information  https://tinypic.host/image/bild-%281%29.3DB2XB#about  Last cost inc land ... View more

Thank you, Marten.  ... View more

Thank you for taking the time to help me.    But the type of the payment needs to be set as CreditNote (in the UI is CreditMemo). The only row should be the invoice matched against the credit note. This is the way our customer does in Visma but for some reason in the API is not possible.   I need to have the same result using the API.  Please don't mind the amounts cause is just an example.     But when I try to send the type as credit note I got the message:  "Error creating payment. Cannot create a Payment of type 'CreditNote' or 'VoidPayment'"}"   But in the swagger we have that option:    Could it be a bug in the API?   ... View more

Thank you for the confirmation !  ... View more

I tried to create the invoice using the UI and I had an error just after typing the customer number. The error was caused by one space on the customer's postal code.  After removing the space I could create the invoice using the API.  Thank you for your help, Magnus!  ... View more

Thanks for the confirmation! ... View more