How to solve – “Ensure at least one payment type has a PaymentService”
Payment types exist, but none of them has been connected to a POS365 payment service.
- In the Admin Center, go to Setup → Payment types.
- Open the payment type you want to use.
- Select the appropriate value in Payment service.
- Enable On POS.
- Save the payment type.
- Ensure that it is assigned to the required cash register.
- Restart POS365.
Indepth guide link: "Set up payment types for POS365"