Tokens are unique to a meter. You can review the history of your account to see the tokens generated for your meter. Open the transactions screen and review the tokens generated for your meter.

Tokens must entered into the meter in the correct order of being generated. If you generated a token on Monday and another one on Tuesday, the token generated on Monday must be inserted before the Token generated on Tuesday.

Open the Transactions screen on the STss Wallet and review the tokens generated for your meter. The newest token will be at the top of the screen.