We are having issues with payments automatically getting applied to any posted sales invoices. This is only happening to two customers out of our 34. I've checked and re-checked the setting on Customer Card and everything is same as rest of our customer's Cards.
What exactly happens is,
Sales Invoice INV-12345 gets posted on 04/26/2017
Payment gets applied to the INV-12345 on 04/26/2017 even though we have not received any payment yet for this INV-12345.
How do we stop this automatic payment mechanism.