PaymentState

SENDING

First state when payment is created and going to go trough payment system. It means it's moving to payment system, but payment system didn't report the payment is received.

SENDING_FAILED

In case of any problems with sending the payment.

PENDING

This state indicates that payment system has sucessfully received the payment. Now it's up to payment system to perform action for the payment. After this state it can go to .APPROVED, .REJECTED, .PAUSED, .CANCELED, .CHARGE_FAILED.

APPROVED

This state guarantees consumer confirmed the payment.

REJECTED

This state means the payment system (not a consumer) rejected the payment.

PAUSED

This state means our app (not a payment system) doesn't communicate with payment system at the moment. In means, the payment system can perform any action with the payment (like approval, rejection etc.). Later on our app can request latest status via getPaymentStatus() method and then our app updates state of the payment. We can treat PAUSED state as unknown yet.

CANCELED

This means consumer or cashier (not the payment system) actively refused the payment.

CHARGE_FAILED

This state indicates the PENDING payment was failed on a pending process.

CHARGE_UNKNOWN

It happens if we try to cancel but some problem occurs so we don't know actual state anymore. resumePayment call required to discover latest state.