Common use cases

• Return paid by you. A shopper returned an item and you refunded them in full, but the vendor's share had already been counted. Record a debt with reason Return and the order number.
• Overcharge. The vendor priced a product wrongly and you refunded the difference. Reason Overcharge.
• Penalty. Late dispatch or a fake product, as per your seller agreement. Reason Penalty.
• Advance. You paid a new vendor something up front. Reason Advance.

In each case, recover the money yourself for now (see Deduction flow), then cancel the debt.