S1 not paid

M1 Purchase an item

C1 Customer must be logged into the system

C2 Select payment method

E1 Record selected payment method

E2 Does not record selected payment method

Selection

S2 pending payment

M2 Process with the payment?

M1 Please choose a payment method

C3 Check lay-by

C4 Check and calculate loyalty

E3 Proceed payment

S2 pending payment

M3 Enter OTP

C5 OTP verification

E4 Payment verification

S3 Paid

S1 not paid

S4 Part paid

Selection

M4 Invalid OTP

M5 Payment successful

M6 Payment canceled

M7 Initial payment successful