Why did this error occur?
Most of the time this error occurs when the e-mail is incorrect or that it does not exist.
How do I correct this error?
Control that you have the correct e-mail address. It could for example have been incorrectly spelled or you could have accidentally entered an invalid character. If it's incorrect, you can correct this under the Account tab and Settings. read more here
To correct the specific invoice that has not been delivered, go to To manage in InExchange Network.
Read more about To manage here