To use UPPCL abc codes are generated by your prepaid meter. You only need to start your prepaid meter, then press five button initially, it will show abc code and repeat it four times, Each time it will display a 5 digits, totaling four times. It is a 20-digit code. Note it down without spaces, and fill it in the abc column.Here I will mention that on my meter I received it by pressing no.5 I don’t know whether it differs between meters.