F.A.Q. ZaK - Payments and documents

• ZaK F.A.Q. - How to issue a document with future date?
• ZaK F.A.Q. - How to handle deposits?
• ZaK F.A.Q. - How to record a refund?
• ZaK F.A.Q. - How to record a payment?
• ZaK F.A.Q. - How to issue an invoice?
• ZaK F.A.Q. - How to issue a credit note?
• ZaK F.A.Q. - How to issue a self-invoice?
• ZaK F.A.Q. - How to receive payments by Credit Card?
• ZaK F.A.Q. - How to issue a 0€ document?