Hi,
1. If you want to get all creditNotes for one customer you use the customer/document endpoint with the document type parameter:
As it is mentioned in the message, the deprecration is only for the specific endpoints. It works for the document endpoint.
If you want to get creditNotes for all customers, you either use, customerCreditNote:
Or, customerPayment with the paymentType CreditNote:
2. No an invoice needs to have a positive amount.
3. A credit note created in the invoice module is a credit note, and will also show up in the customer payment module.
I would recommend that you have a look at how it behaves in the UI on the screenId's that are shown in the screenshots.
... Meer weergeven