If your top up was rejected, you'll receive one of the following error messages. If applicable, wait till the error message appears and then try again.

Duplicate: You have entered this power code before and cannot use it again

Incorrect: The power code has been keyed in incorrectly or is for another property.

Error: You have missed a number or entered the power code too slowly.

KB Lock: The power code has been entered incorrectly five times in a row. You'll be locked out for 30 seconds before you can try again.

Wrong Tar: The price of electricity has changed. You must enter the special 40-60 digit power code first - either get your last power code reissued or buy a new one.

CreditHI: You have too much credit on your meter. Wait a few days and try again.