the serial number entered is invalid.please re-enter the num

the serial number entered is invalid.please re-enter the num The serial code you entered is invalid.Please enter a valid the serial you entered is invalid是什么意思? zhe serial number is incorrect.Please enter the correct numb the serial number is invalid是什么意思 please enter the serial number that you received the purchas please enter the serial number that yuo received the purchas please enter the serial number that you received with Please enter the serial number you received with your purcha please enter your serial number in the box The serial number you entered is not valid.Try again. The number that you have entered is invalid是什么意思